upgrade deps + android compile/build version

Author: mythz

src/AndroidClient/android/build.gradle

@@ -5,7 +5,7 @@ apply plugin: 'com.jfrog.bintray'
 version = "1.0.36"
 
 dependencies {
-    implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.5'
+    implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
     implementation 'com.squareup.okhttp3:okhttp:3.10.0'
     implementation fileTree(include: '*.jar', dir: 'libs')
     androidTestImplementation 'junit:junit:4.12'
@@ -15,12 +15,12 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 28
-    buildToolsVersion '28.0.3'
+    compileSdkVersion 29
+    buildToolsVersion '29.0.2'
 
     defaultConfig {
         minSdkVersion 15
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 1
         versionName version
 

src/AndroidClient/client/build.gradle

@@ -6,7 +6,7 @@ apply plugin: 'maven'
 version = "1.0.36"
 
 dependencies {
-    implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.2'
+    implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
     testImplementation 'junit:junit:4.12'
     testImplementation 'pl.pragmatists:JUnitParams:1.1.1'
 }