Bump GitHub action dependencies.

Author: mp911de

.github/workflows/docs-build.yml

@@ -51,15 +51,15 @@ jobs:
     - name: Run Antora
       run: ./mvnw -B antora
     - name: Publish Docs
-      uses: spring-io/spring-doc-actions/[email protected].11
+      uses: spring-io/spring-doc-actions/[email protected].18
       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: target/antora/site
     - name: Bust Cloudflare Cache
-      uses: spring-io/spring-doc-actions/[email protected].12
+      uses: spring-io/spring-doc-actions/[email protected].18
       with:
         context-root: spring-vault
         cloudflare-zone-id: ${{ secrets.CLOUDFLARE_ZONE_ID }}