Update Pull Request template by adding Release Notes

[svor]

What does this PR do?

Updates Pull Request template by adding Release Notes

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: svor, tolusha

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[devstudio-release]

Build 3.17 :: server_3.x/354: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: sync-to-downstream_3.x/7599: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: get-sources-rhpkg-container-build_3.x/7583: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: push-latest-container-to-quay_3.x/4898: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: get-sources-rhpkg-container-build_3.x/7583:

server : 3.x :: Build 63665100 : quay.io/devspaces/server-rhel8:3.17-2
SUCCESS; copied to quay; /DS_CI/push-latest-container-to-quay_3.x/4898 triggered

[devstudio-release]

Build 3.17 :: server_3.x/354:

Upstream sync done; /DS_CI/sync-to-downstream_3.x/7599 triggered

[devstudio-release]

Build 3.17 :: update-digests_3.x/7417: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: operator-bundle_3.x/3547: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: sync-to-downstream_3.x/7601: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: get-sources-rhpkg-container-build_3.x/7585: Console, Changes, Git Data

[devstudio-release]

Build 3.17 :: get-sources-rhpkg-container-build_3.x/7585:

devspaces-operator-bundle : 3.x :: Failed in 63676351 : BREW:BUILD/STATUS:UNKNOWN
FAILURE:; copied to quay