Add server and GPG configuration to setup-java in release workflow (#364)

Co-authored-by: thomasturrell <1552612+thomasturrell@users.noreply.github.com>

Author: Copilot

.github/workflows/release.yml

@@ -78,6 +78,11 @@ jobs:
           java-version: "25"
           distribution: "temurin"
           cache: maven
+          server-id: central
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+          gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
 
       - name: Configure Git
         run: |