Bump the development-dependencies group across 1 directory with 2 updates

Bumps the development-dependencies group with 2 updates in the / directory: [spring-io/spring-doc-actions](https://github.com/spring-io/spring-doc-actions) and [spring-io/github-changelog-generator](https://github.com/spring-io/github-changelog-generator).


Updates `spring-io/spring-doc-actions` from 0.0.19 to 0.0.20
- [Commits](spring-io/spring-doc-actions@v0.0.19...v0.0.20)

Updates `spring-io/github-changelog-generator` from 0.0.11 to 0.0.12
- [Release notes](https://github.com/spring-io/github-changelog-generator/releases)
- [Commits](spring-io/github-changelog-generator@v0.0.11...v0.0.12)

---
updated-dependencies:
- dependency-name: spring-io/spring-doc-actions
  dependency-version: 0.0.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
- dependency-name: spring-io/github-changelog-generator
  dependency-version: 0.0.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

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

Author: dependabot[bot]

Diff for: .github/workflows/ci.yml

@@ -130,15 +130,15 @@ jobs:
         run: |
           ./gradlew antora
       - name: Publish Docs
-        uses: spring-io/spring-doc-actions/[email protected].19
+        uses: spring-io/spring-doc-actions/[email protected].20
         with:
           docs-username: ${{ secrets.DOCS_USERNAME }}
           docs-host: ${{ secrets.DOCS_HOST }}
           docs-ssh-key: ${{ secrets.DOCS_SSH_KEY }}
           docs-ssh-host-key: ${{ secrets.DOCS_SSH_HOST_KEY }}
           site-path: spring-pulsar-docs/build/site
       - name: Bust Clouflare Cache
-        uses: spring-io/spring-doc-actions/[email protected].19
+        uses: spring-io/spring-doc-actions/[email protected].20
         with:
           context-root: spring-pulsar
           cloudflare-zone-id: ${{ secrets.CLOUDFLARE_ZONE_ID }}
@@ -198,7 +198,7 @@ jobs:
           echo "changelog.contributors.exclude.names=$repositoryTeam" > changelog.properties
           echo "changelog.issues.generate-links=$repositoryVisibility" >> changelog.properties
       - name: Generate Changelog
-        uses: spring-io/[email protected].11
+        uses: spring-io/[email protected].12
         with:
           milestone: ${{ env.VERSION }}
           token: ${{ secrets.GH_ACTIONS_REPO_TOKEN }}