Install both Java 17 and Java 24 for building docs

Docs branches have different Java requirements we should ensure that all
required Java versions are available locally.

Author: bclozel

.github/workflows/deploy-docs.yml

@@ -25,7 +25,9 @@ jobs:
       uses: actions/setup-java@v4
       with:
         distribution: 'liberica'
-        java-version: '24'
+        java-version: |
+          17
+          24
     - name: Set Up Gradle
       uses: gradle/actions/setup-gradle@ac638b010cf58a27ee6c972d7336334ccaf61c96 # v4.4.1
       with: