DO NOT MERGE. Is that better?

Author: SamBarker

.github/workflows/ci.yml

@@ -92,7 +92,7 @@ jobs:
         include:
           - namespace: flink
             extraArgs: '--create-namespace --set "watchNamespaces={default,flink}"'
-            java-version: [ 21 ]
+            java-version: 21
           - version: v1_20
             image: flink:1.20
           - version: v1_20
@@ -101,7 +101,7 @@ jobs:
             namespace: "default"
             test: test_application_operations.sh
             http-client: [ "okhttp", "vertx", "jetty",  "jdk"]
-            java-version: [ 21 ]
+            java-version: 21
         exclude:
           - namespace: default
             test: test_multi_sessionjob.sh