Update CI to use Java 23

Author: Quinn-With-Two-Ns

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Set up Java
       uses: actions/setup-java@v4
       with:
-        java-version: "21"
+        java-version: "23"
         distribution: "temurin"
 
     - name: Set up Gradle
@@ -61,7 +61,7 @@ jobs:
       uses: actions/setup-java@v4
       with:
         java-version: |
-          21
+          23
           11
         distribution: "temurin"
 
@@ -180,7 +180,7 @@ jobs:
     - name: Set up Java
       uses: actions/setup-java@v4
       with:
-        java-version: "23"
+        java-version: "11"
         distribution: "temurin"
 
     - name: Set up Gradle