Don't use an external action for generating a changelog

The generated changelog was not used, because it was not located in the
chart directory. Releases should only include files commited in the
repository, so avoid generatic a changelog file and instead use the
GitHub API to generate notes automatically in the GitHub release.

.github/workflows/ci-cd.yaml

@@ -98,27 +98,14 @@ jobs:
     if: github.event_name != 'pull_request'
     steps:
       - uses: actions/checkout@v4
-        with:
-          # history is required to generate changelog
-          fetch-depth: 0
       - name: Configure Git
         run: |
           git config user.name "$GITHUB_ACTOR"
           git config user.email "[email protected]"
-      - name: Build release changelog
-        id: github_release
-        uses: mikepenz/release-changelog-builder-action@v4
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          configuration: '.github/changelog-config.json'
-          outputFile: ${{ runner.temp }}/CHANGELOG.md
-      - name: Inspect changelog
-        run: cat ${{ runner.temp }}/CHANGELOG.md
       - name: Release charts
         uses: helm/[email protected]
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-          CR_RELEASE_NOTES_FILE: ${{ runner.temp }}/CHANGELOG.md
+          CR_GENERATE_RELEASE_NOTES: true
           # If we didn't bump the chart version then we can skip the release
           CR_SKIP_EXISTING: true