Use Java 11 for some integration tests

Author: alexet

java/ql/integration-tests/all-platforms/java/gradle-sample/test.py

@@ -2,4 +2,7 @@
 
 from create_database_utils import *
 
+#The version of gradle used doesn't work on java 17
+try_use_java11()
+
 run_codeql_database_create([], lang="java")

java/ql/integration-tests/all-platforms/java/partial-gradle-sample/test.py

@@ -2,4 +2,7 @@
 
 from create_database_utils import *
 
+#The version of gradle used doesn't work on java 17
+try_use_java11()
+
 run_codeql_database_create([], lang="java")