Update GSON version to latest stable release (#255)

Author: TwistedTwigleg

android/iotdevicesdk/build.gradle

@@ -93,7 +93,7 @@ repositories {
 dependencies {
     api 'software.amazon.awssdk.crt:aws-crt-android:0.16.0'
     implementation 'org.slf4j:slf4j-api:1.7.30'
-    implementation 'com.google.code.gson:gson:2.8.5'
+    implementation 'com.google.code.gson:gson:2.9.0'
     implementation 'androidx.appcompat:appcompat:1.1.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'

samples/Identity/pom.xml

@@ -22,7 +22,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.9.0</version>
             <scope>compile</scope>
         </dependency>
         <dependency>

sdk/pom.xml

@@ -71,7 +71,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.5</version>
+      <version>2.9.0</version>
       <scope>compile</scope>
     </dependency>
     <dependency>