Attempt to build with Java 22 in CI

.github/workflows/ant.yml

@@ -21,5 +21,23 @@ jobs:
         with:
           name: I2P-${{ github.sha }}.dmg
           path: I2P-1.0.dmg
+
+  build-22:
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 22
+        uses: actions/setup-java@v4
+        with:
+          java-version: '22'
+          distribution: 'temurin'
+      - name: build with script
+        run: ./build.sh
+      - name: Upload I2P-${{ github.sha }}.dmg
+        uses: actions/upload-artifact@v4
+        with:
+          name: I2P-${{ github.sha }}-22.dmg
+          path: I2P-1.0.dmg