Update CI workflow to include Java 25 and upgrade actions

Author: pgleeson

.github/workflows/ci.yml

@@ -16,20 +16,18 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ '8', '11', '16', '17', '19', '21' ]
+        java: [ '8', '11', '17', '19', '21', '25' ]
         runs-on: [ubuntu-latest, macos-latest, windows-latest]
         exclude:
           - runs-on: macos-latest
             java: "8"
-          - runs-on: macos-latest
-            java: "16"
 
 
     name: Test on Java ${{ matrix.Java }} on ${{ matrix.runs-on }}
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up JDK ${{ matrix.Java }}
-      uses: actions/setup-java@v4
+      uses: actions/setup-java@v5
       with:
         java-version: ${{ matrix.Java }}
         distribution: 'temurin'