Bump thomaseizinger/keep-a-changelog-new-release from 2 to 3

Bumps [thomaseizinger/keep-a-changelog-new-release](https://github.com/thomaseizinger/keep-a-changelog-new-release) from 2 to 3.
- [Release notes](https://github.com/thomaseizinger/keep-a-changelog-new-release/releases)
- [Changelog](https://github.com/thomaseizinger/keep-a-changelog-new-release/blob/master/CHANGELOG.md)
- [Commits](thomaseizinger/keep-a-changelog-new-release@v2...v3)

---
updated-dependencies:
- dependency-name: thomaseizinger/keep-a-changelog-new-release
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -79,7 +79,7 @@ jobs:
             SmartSpin2kFirmware-${{ steps.date.outputs.date }}.bin.zip
               update-changelog:
       - name: Update changelog
-        uses: thomaseizinger/keep-a-changelog-new-release@v2
+        uses: thomaseizinger/keep-a-changelog-new-release@v3
         with:
           version: ${{ steps.date.outputs.date }}