Bump appcompat from 1.1.0 to 1.2.0 (#450)

Bumps appcompat from 1.1.0 to 1.2.0. Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

build.gradle

@@ -15,7 +15,7 @@ ext {
 ext.deps = [rxjava2 : 'io.reactivex.rxjava2:rxjava:2.2.19',
  rxandroid2 : 'io.reactivex.rxjava2:rxandroid:2.1.1',
  annotation : 'androidx.annotation:annotation:1.1.0',
- appcompat : 'androidx.appcompat:appcompat:1.1.0',
+ appcompat : 'androidx.appcompat:appcompat:1.2.0',
  junit : 'junit:junit:4.13',
  truth : 'com.google.truth:truth:1.0.1',
  robolectric : 'org.robolectric:robolectric:4.3.1',