Add release note template to split dependency chores

[der-eismann]

What type of PR is this?

/kind api-change
/kind bug
/kind cleanup
/kind deprecation
/kind design

/kind documentation

/kind failing-test
/kind feature
/kind flake
/kind other

What this PR does / why we need it:

This PR adds a template to the repository to use with auto-generated release notes from GitHub. In the release notes for https://github.com/containers/buildah/releases/tag/v1.35.0 everything is put in one list, which makes it hard to differentiate actual changes from dependency updates.
This template puts the dependency updates in a separate paragraph, causing the release notes to look cleaner. This only works when PRs are labelled correctly, which is the case for renovate, but #5184 for example would need the dependencies label.

How to verify it

Try to auto-generate release notes, but it only works after merging.

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

Does this PR introduce a user-facing change?

None

[rhatdan]

Thanks @der-eismann
You need to sign your commit.
git commit --amend -s -a
git push --force

[der-eismann]

Done, thanks for the reminder!

[rhatdan]

@TomSweeneyRedHat @mheon WDYT?

[mheon]

We manually split the release notes up in Podman, so automating at least part of the work seems good?

[TomSweeneyRedHat]

Works for me, but needs a rebase. I've been spinning a mess load of releases as of late, and it's been notably messy at best.

[github-actions]

A friendly reminder that this PR had no activity for 30 days.

[rhatdan]

@der-eismann are you still working on this?

[packit-as-a-service]

Ephemeral COPR build failed. @containers/packit-build please check.

[der-eismann]

@der-eismann are you still working on this?

Yes, but I have no idea why builds fail on such a change.

[TomSweeneyRedHat]

@der-eismann The build issues may be unrelated. We have been having some "fun" with our CI as of later.

[rhatdan]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: der-eismann, rhatdan

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