update actions to use java 21 (#4594)

* update actions to use java 21

* jdk name correction

.github/workflows/build-remote.yml

@@ -22,11 +22,11 @@ jobs:
         run: |
           echo "BUILD_NUMBER=${GITHUB_RUN_NUMBER}" >> $GITHUB_ENV
 
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         # See https://github.com/actions/setup-java/commits
         uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4.0.0
         with:
-          java-version: 17
+          java-version: 21
           distribution: temurin
 
       - name: Checkout repository and submodules

.github/workflows/build.yml

@@ -44,7 +44,7 @@ jobs:
         # See https://github.com/actions/setup-java/commits
       - uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4.0.0
         with:
-          java-version: 17
+          java-version: 21
           distribution: temurin
           
       - name: Build