Use matching JDK in GitHub Actions

Author: Mygod

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           distribution: jetbrains
-          java-version: "17"
+          java-version: "21"
           cache: gradle
 
       - name: Install Android SDK packages

.github/workflows/codeql.yml

@@ -27,8 +27,8 @@ jobs:
       - name: Set up Java
         uses: actions/setup-java@v5
         with:
-          distribution: temurin
-          java-version: 17
+          distribution: jetbrains
+          java-version: 21
 
       - name: Set up Android SDK
         uses: android-actions/setup-android@v4