cicd: Upgraded to java 21

Author: jruaux

.github/workflows/early-access.yml

@@ -11,7 +11,7 @@ jobs:
     uses: redis-field-engineering/redis-github-workflows/.github/workflows/early-access.yml@main
     with:
       jreleaser-arguments: full-release
-      java-version: 19
+      java-version: 21
     secrets:
       github-token: ${{ secrets.GIT_ACCESS_TOKEN }}
       gpg-passphrase: ${{ secrets.GPG_PASSPHRASE }}