chore(deps): update dependency google-cloud-tasks to v2.2.0 (#71)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-tasks](https://github.com/googleapis/python-tasks) | `==2.1.0` -> `==2.2.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-tasks/2.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-tasks/2.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-tasks/2.2.0/compatibility-slim/2.1.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-tasks/2.2.0/confidence-slim/2.1.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/python-tasks</summary>

### [`v2.2.0`](https://github.com/googleapis/python-tasks/blob/master/CHANGELOG.md#&#8203;220-httpswwwgithubcomgoogleapispython-taskscomparev210v220-2021-02-24)

[Compare Source](https://github.com/googleapis/python-tasks/compare/v2.1.0...v2.2.0)

##### Features

-   add from_service_account_info method to clients ([e1fdc76](https://github.com/googleapis/python-tasks/commit/e1fdc76f5369e53067a1748aecce9fa3940d9ee1))
-   **v2beta3, v2beta2:** introducing fields: ListQueuesRequest.read_mask, GetQueueRequest.read_mask, Queue.task_ttl, Queue.tombstone_ttl, Queue.stats and introducing messages: QueueStats ([e1fdc76](https://github.com/googleapis/python-tasks/commit/e1fdc76f5369e53067a1748aecce9fa3940d9ee1))

##### Bug Fixes

-   remove client recv msg limit fix: add enums to `types/__init__.py` ([#&#8203;56](https://github.com/googleapis/python-tasks/issues/56)) ([6a5bfaf](https://github.com/googleapis/python-tasks/commit/6a5bfaf63b46567897c36907772b10ea4b0dff43))
-   Update sample comments ([#&#8203;58](https://github.com/googleapis/python-tasks/issues/58)) ([3eb30b3](https://github.com/googleapis/python-tasks/commit/3eb30b349b9092a2a2fb08116855139418ebd371))

##### Documentation

-   fix type references in docstrings ([e1fdc76](https://github.com/googleapis/python-tasks/commit/e1fdc76f5369e53067a1748aecce9fa3940d9ee1))
-   **v2beta2:** updates to AppEngineHttpRequest description ([e1fdc76](https://github.com/googleapis/python-tasks/commit/e1fdc76f5369e53067a1748aecce9fa3940d9ee1))
-   **v2beta3:** updates to max burst size description ([e1fdc76](https://github.com/googleapis/python-tasks/commit/e1fdc76f5369e53067a1748aecce9fa3940d9ee1))

</details>

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packages/google-cloud-tasks/samples/snippets/requirements.txt

@@ -1 +1 @@
-google-cloud-tasks==2.1.0
+google-cloud-tasks==2.2.0