🐛 Source Marketo: Fix timestamp value format issue

[lazebnyi]

What

Connector receives 'bad' formated values for createdAt and updatedAt fields (e.g. 2015-05-21T22:45:13Z+0000). According to this destination normalization could not parse value as date-time format (e.g. Snowflake).

How

During parsing, records delete +00:00 part from the end of createdAt and updatedAt (e.g. 2015-05-21T22:45:13Z+0000).

Changed spec.json file according to UX Handbook and this comment.

Recommended reading order

1. x.java
2. y.python

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Expand the relevant checklist and delete the others.

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• Code reviews completed
• Documentation updated
  • Connector's README.md
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  • Changelog updated in docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
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• Create a non-forked branch based on this PR and test the below items on it
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[lazebnyi]

/test connector=connectors/source-marketo

🕑 connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1515967866
❌ connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1515967866
🐛 https://gradle.com/s/wa7d2t6poywfw
🕑 connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1515967866
✅ connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1515967866
Python tests coverage:

	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                                                 Stmts   Miss  Cover
	 ------------------------------------------------------------------------
	 source_acceptance_test/__init__.py                       2      0   100%
	 source_acceptance_test/base.py                          10      4    60%
	 source_acceptance_test/config.py                        75      8    89%
	 source_acceptance_test/conftest.py                     108    108     0%
	 source_acceptance_test/plugin.py                        47     47     0%
	 source_acceptance_test/tests/__init__.py                 4      0   100%
	 source_acceptance_test/tests/test_core.py              200     94    53%
	 source_acceptance_test/tests/test_full_refresh.py       38     27    29%
	 source_acceptance_test/tests/test_incremental.py        69     38    45%
	 source_acceptance_test/utils/__init__.py                 6      0   100%
	 source_acceptance_test/utils/asserts.py                 37      2    95%
	 source_acceptance_test/utils/common.py                  41     24    41%
	 source_acceptance_test/utils/compare.py                 62     25    60%
	 source_acceptance_test/utils/connector_runner.py        82     49    40%
	 source_acceptance_test/utils/json_schema_helper.py     115     14    88%
	 ------------------------------------------------------------------------
	 TOTAL                                                  896    440    51%
	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                         Stmts   Miss  Cover
	 ------------------------------------------------
	 source_marketo/__init__.py       2      0   100%
	 source_marketo/source.py       237    151    36%
	 source_marketo/utils.py         31      8    74%
	 ------------------------------------------------
	 TOTAL                          270    159    41%

[antixar]

Please add as integration test for checking of correct values

[lazebnyi]

/test connector=connectors/source-marketo

🕑 connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1534950725
✅ connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1534950725
Python tests coverage:

	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                                                 Stmts   Miss  Cover
	 ------------------------------------------------------------------------
	 source_acceptance_test/__init__.py                       2      0   100%
	 source_acceptance_test/base.py                          10      4    60%
	 source_acceptance_test/config.py                        75      8    89%
	 source_acceptance_test/conftest.py                     108    108     0%
	 source_acceptance_test/plugin.py                        47     47     0%
	 source_acceptance_test/tests/__init__.py                 4      0   100%
	 source_acceptance_test/tests/test_core.py              200     94    53%
	 source_acceptance_test/tests/test_full_refresh.py       38     27    29%
	 source_acceptance_test/tests/test_incremental.py        69     38    45%
	 source_acceptance_test/utils/__init__.py                 6      0   100%
	 source_acceptance_test/utils/asserts.py                 37      2    95%
	 source_acceptance_test/utils/common.py                  41     24    41%
	 source_acceptance_test/utils/compare.py                 62     25    60%
	 source_acceptance_test/utils/connector_runner.py        82     49    40%
	 source_acceptance_test/utils/json_schema_helper.py     115     14    88%
	 ------------------------------------------------------------------------
	 TOTAL                                                  896    440    51%
	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                         Stmts   Miss  Cover
	 ------------------------------------------------
	 source_marketo/__init__.py       2      0   100%
	 source_marketo/source.py       237    151    36%
	 source_marketo/utils.py         31      8    74%
	 ------------------------------------------------
	 TOTAL                          270    159    41%

[antixar]

LGTM!
Please publish these changes

[lazebnyi]

/publish connector=connectors/source-marketo

🕑 connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1544175957
❌ connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1544175957
🕑 connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1544175957
✅ connectors/source-marketo https://github.com/airbytehq/airbyte/actions/runs/1544175957