Drop Java 22 build from GH CI

Author: garydgregory

.github/workflows/maven.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        java: [ 8, 11, 17, 21, 22 ]
+        java: [ 8, 11, 17, 21 ]
         experimental: [false]
         include:
           - java: 23