Remove Java 22 from CI test matrix

Java 23 is now GA.

Author: bclozel

.github/workflows/ci.yml

@@ -20,8 +20,6 @@ jobs:
             toolchain: false
           - version: 21
             toolchain: true
-          - version: 22
-            toolchain: true
           - version: 23
             toolchain: true
         exclude: