revert unneeded changes

.github/workflows/main.yml

@@ -54,7 +54,7 @@ jobs:
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9
         with:
           distribution: 'zulu'
-          java-version: '18'
+          java-version: '17'
       - uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
         with:
           channel: stable

add_to_app/books/android_books/build.gradle

@@ -6,7 +6,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:7.0.0"
+        classpath "com.android.tools.build:gradle:7.4.2"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong

add_to_app/books/android_books/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists