feat: set custom target when creating release

[guilhermelimak]

Set the bump commit hash as release target to avoid merging the changes commited to the main branch after the release PR is created to be included in the release.

References nearform-actions/optic-release-automation-action#167

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[guilhermelimak]

@simoneb This is ready for review

[simoneb]

before we merge this, let's please give another thought about whether this is backwards compatible with the existing versions of the action circulating. I assume it is, but let's cross check as if that is not the case, everything will break

[guilhermelimak]

before we merge this, let's please give another thought about whether this is backwards compatible with the existing versions of the action circulating. I assume it is, but let's cross check as if that is not the case, everything will break

I did test the backwards compatibility both ways but will do it again today just to make sure before deploying

[simoneb]

we can merge then, deployment is only done after a release

[guilhermelimak]

we can merge then, deployment is only done after a release

Just tested it again and all seems fine. I'll merge it