Set JAVA_HOME

Author: shahmishal

.github/workflows/pull_request.yml

@@ -11,3 +11,5 @@ jobs:
         with:
           exclude_swift_versions: "[{\"swift_version\": \"5.8\"}]"
           pre_build_command: "apt-get update -y -q && apt-get install -y -q openjdk-21-jdk"
+        env:
+          JAVA_HOME: "/usr/lib/jvm/java-21-openjdk-amd64"