Update mikepenz/release-changelog-builder-action action to v6

Author: renovate[bot]

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
           fetch-depth: "0"
       - name: Build changelog from PRs with labels
         id: build_changelog
-        uses: mikepenz/release-changelog-builder-action@v5
+        uses: mikepenz/release-changelog-builder-action@v6
         with:
           configuration: ".github/changelog-configuration.json"
           # PreReleases still get a changelog, but the next full release gets a diff since the last full release,