Add Java 18 to CI workflows

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ '17' ]
+        java: [ '17', '18' ]
 
     steps:
       - uses: actions/checkout@v1

.github/workflows/codeql-analysis.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Java JDK
         uses: actions/setup-java@v1
         with:
-          java-version: 17
+          java-version: 18
 
       - name: Checkout repository
         uses: actions/checkout@v2

.github/workflows/repackage-native-libs.yml

@@ -135,7 +135,7 @@ jobs:
         shell: bash   # Explicit for windows
 
     env:
-      JAVA_VERSION: 17
+      JAVA_VERSION: 18
 
     steps: