Update the pull_request_template for release-note 📖

[vdemeester]

Changes

• The release notes need to use the release-note code block.
• Do not add any by default to force the block to be added
  accordingly to the PR content.

Signed-off-by: Vincent Demeester vdemeest@redhat.com

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes tests (if functionality changed/added)
• Includes docs (if user facing)
• Commit messages follow commit message best practices
• Release notes block has been filled in or deleted (only if no user facing changes)

See the contribution guide for more details.

Double check this list of stuff that's easy to miss:

• If you are adding a new binary/image to the cmd dir, please update
  the release Task to build and release this image.

Reviewer Notes

If API changes are included, additive changes must be approved by at least two OWNERS and backwards incompatible changes must be approved by more than 50% of the OWNERS, and they must first be added in a backwards compatible way.

Release Notes

NONE

[tekton-robot]

This PR cannot be merged: expecting exactly one kind/ label

Available kind/ labels are:

kind/question: Issues or PRs that are questions around the project or a particular feature
kind/bug: Categorizes issue or PR as related to a bug.
kind/flake: Categorizes issue or PR as related to a flakey test
kind/cleanup: Categorizes issue or PR as related to cleaning up code, process, or technical debt.
kind/design: Categorizes issue or PR as related to design.
kind/documentation: Categorizes issue or PR as related to documentation.
kind/feature: Categorizes issue or PR as related to a new feature.
kind/misc: Categorizes issue or PR as a miscellaneuous one.

[vdemeester]

/cc @jerop
/kind misc

[vdemeester]

🤔 why is the check-pr-has-kind-label still red 🤔

[piyush-garg]

/lgtm

[piyush-garg]

/test check-pr-has-kind-label

[houshengbo]

/kind label

[afrittoli]

/kind misc

[afrittoli]

Reason for the CI failure: https://dashboard.dogfooding.tekton.dev/#/namespaces/tektonci/taskruns/check-pr-labels-rgx8q

File "/tekton/scripts/script-5-x7m4b", line 6
    prLabels = json.loads('[{"color":"ef8fd9","default":false,"description":"Categorizes issue or PR as a miscellaneuous one.","id":2026949470,"name":"kind/misc","node_id":"MDU6TGFiZWwyMDI2OTQ5NDcw","url":"https://api.github.com/repos/tektoncd/pipeline/labels/kind/misc"},{"color":"6aed75","default":false,"description":"Indicates that a PR is ready to be merged.","id":1053663386,"name":"lgtm","node_id":"MDU6TGFiZWwxMDUzNjYzMzg2","url":"https://api.github.com/repos/tektoncd/pipeline/labels/lgtm"},{"color":"c2e0c6","default":false,"description":"Denotes a PR that doesn't merit a release note.","id":1402691966,"name":"release-note-none","node_id":"MDU6TGFiZWwxNDAyNjkxOTY2","url":"https://api.github.com/repos/tektoncd/pipeline/labels/release-note-none"},{"color":"77bb00","default":false,"description":"Denotes a PR that changes 10-29 lines, ignoring generated files.","id":1060140553,"name":"size/S","node_id":"MDU6TGFiZWwxMDYwMTQwNTUz","url":"https://api.github.com/repos/tektoncd/pipeline/labels/size/S"}]')
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ^
SyntaxError: invalid syntax

[vdemeester]

/kind misc

[vdemeester]

/kind foo

[vdemeester]

/kind misc

[tekton-robot]

This PR cannot be merged: expecting exactly one kind/ label

Available kind/ labels are:

kind/question: Issues or PRs that are questions around the project or a particular feature
kind/bug: Categorizes issue or PR as related to a bug.
kind/flake: Categorizes issue or PR as related to a flakey test
kind/cleanup: Categorizes issue or PR as related to cleaning up code, process, or technical debt.
kind/design: Categorizes issue or PR as related to design.
kind/documentation: Categorizes issue or PR as related to documentation.
kind/feature: Categorizes issue or PR as related to a new feature.
kind/misc: Categorizes issue or PR as a miscellaneuous one.

[bobcatfish]

/approve

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bobcatfish

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [bobcatfish]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment