Update gradle plugin version and other properties

This was basically done by creating a new flutter project and comparing the
different generated files

android/app/build.gradle

@@ -44,12 +44,12 @@ if (localMapsPropertiesFile.exists()) {
     project.logger.info('Load maps properties from environment')
     try {
         wgerProperties['WGER_API_KEY'] = System.getenv('WGER_API_KEY')
-    } catch(NullPointerException e) {
+    } catch (NullPointerException e) {
         project.logger.warn('Failed to load WGER_API_KEY from environment.', e)
     }
 }
 def wgerApiKey = wgerProperties.getProperty('WGER_API_KEY')
-if(wgerApiKey == null){
+if (wgerApiKey == null) {
     wgerApiKey = ""
     project.logger.error('Wger Api Key not configured. Set it in `/fastlane/metadata/android/envfiles/wger.properties` or in the environment variable `WGER_API_KEY`')
 }
@@ -58,6 +58,15 @@ android {
     compileSdkVersion 33
     ndkVersion "25.1.8937393"
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }

android/build.gradle

@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.6.10'
+    ext.kotlin_version = '1.7.10'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.3'
+        classpath 'com.android.tools.build:gradle:7.2.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
@@ -14,7 +14,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 

android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-all.zip