bump compile sdk to v31

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/build.gradle

@@ -35,7 +35,7 @@ apply plugin: 'io.gitlab.arturbosch.detekt'
 apply plugin: "org.jlleitschuh.gradle.ktlint"
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     buildToolsVersion '32.0.0'
     defaultConfig {
         minSdkVersion 21
@@ -91,6 +91,7 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
     packagingOptions {
         resources {
             excludes += [
@@ -104,7 +105,6 @@ android {
         }
     }
 
-
     android.applicationVariants.all { variant ->
         String variantName = variant.name
         String capVariantName = variantName.substring(0, 1).toUpperCase(Locale.ROOT) + variantName.substring(1)
@@ -132,10 +132,10 @@ android {
         targetCompatibility JavaVersion.VERSION_1_8
     }
 
-
     buildFeatures {
         viewBinding true
     }
+
     lint {
         abortOnError false
         disable 'MissingTranslation'
@@ -162,6 +162,7 @@ def webRtcVersion = "96.4664.0"
 tasks.register('downloadWebRtc', DownloadWebRtcTask){
     version = webRtcVersion
 }
+
 preBuild.dependsOn('downloadWebRtc')
 
 configurations.all {
@@ -296,10 +297,8 @@ dependencies {
     testImplementation "org.powermock:powermock-module-junit4:${powermockVersion}"
     testImplementation "org.powermock:powermock-api-mockito2:${powermockVersion}"
 
-
     androidTestImplementation "androidx.test:core:1.4.0"
 
-
     // Espresso core
     androidTestImplementation ("androidx.test.espresso:espresso-core:$espressoVersion", {
         exclude group: 'com.android.support', module: 'support-annotations'