Merge pull request #182 from googlecodelabs/fm/main_version_bump

[Java] Update versions

Author: florina-muntenescu

app/build.gradle

@@ -1,4 +1,6 @@
-apply plugin: 'com.android.application'
+plugins {
+    id 'com.android.application'
+}
 
 android {
     compileSdkVersion 30

build.gradle

@@ -27,14 +27,14 @@ task clean(type: Delete) {
 }
 
 ext {
-    appCompatVersion = '1.2.0'
-    constraintLayoutVersion = '2.0.2'
+    appCompatVersion = '1.3.0'
+    constraintLayoutVersion = '2.0.4'
     coreTestingVersion = '2.1.0'
-    lifecycleVersion = '2.2.0'
-    materialVersion = '1.2.1'
-    roomVersion = '2.2.5'
+    lifecycleVersion = '2.3.1'
+    materialVersion = '1.3.0'
+    roomVersion = '2.3.0'
     // testing
-    junitVersion = '4.13.1'
+    junitVersion = '4.13.2'
     espressoVersion = '3.1.0'
     androidxJunitVersion = '1.1.2'
 }