Upgrade gradle and sdk and dependency versions

android/build.gradle

@@ -4,11 +4,11 @@ apply plugin: 'maven-publish'
 apply plugin: 'signing'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     defaultConfig {
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
 
@@ -27,13 +27,13 @@ android {
 dependencies {
     implementation 'net.java.dev.jna:jna:5.8.0@aar'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.3.0'
-    implementation 'androidx.core:core-ktx:1.5.0'
+    implementation 'androidx.appcompat:appcompat:1.4.0'
+    implementation 'androidx.core:core-ktx:1.7.0'
     api "org.slf4j:slf4j-api:1.7.30"
 
     androidTestImplementation 'com.github.tony19:logback-android:2.0.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.1'
 }
 
@@ -43,14 +43,13 @@ afterEvaluate {
         publications {
             // Creates a Maven publication called "release".
             release(MavenPublication) {
+                // Applies the component for the release build variant.
+                from components.release
 
                 // You can then customize attributes of the publication as shown below.
                 groupId = 'org.bitcoindevkit'
                 artifactId = 'bdk-android'
-                version = '0.2.0'
-
-                // Applies the component for the release build variant.
-                from components.release
+                version = '0.2.2'
 
                 pom {
                     name = 'bdk-android'