Handle external linked issues

[simoneb]

When the action does a release it by default tries to comment on the linked issues of each PR included in the release, mentioning in which release the issue was addressed.

We came across a case whereby the linked issue was in a different repo, which failed the action. See here.

The action needs to handle this more correctly and post the comment on the issue in a "best effort" way. It should still try, but it shouldn't fail the execution if it cannot comment. Also note that I'm not even sure this case should have failed, it's just that the action tried to post the comment on an issue that doesn't exist because it was searching for that issue in the same repo, whereas it was an external repo.

[github-actions]

🎉 This issue has been resolved in version 4.0.2 🎉

The release is available on:

• GitHub release

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