update ci to jdk 21

.github/workflows/android.yml

@@ -23,10 +23,10 @@ jobs:
         path: libxposed/api
         fetch-depth: 0
 
-    - name: set up JDK 17
+    - name: set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
         cache: gradle
 
@@ -50,7 +50,6 @@ jobs:
         echo 'org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8 -XX:+UseParallelGC' >> ~/.gradle/gradle.properties
         echo 'android.native.buildOutput=verbose' >> ~/.gradle/gradle.properties
         # build dependencies
-        sed -i 's/VERSION_21/VERSION_17/g' libxposed/api/checks/build.gradle.kts
         cd libxposed/api && ./gradlew publishToMavenLocal && cd ../..
         # build DisableFlagSecure
         chmod +x gradlew

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'com.android.application' version '8.9.0' apply false
+    id 'com.android.application' version '8.9.1' apply false
     id 'org.lsposed.lsplugin.jgit' version "1.1"
 }