Bump gradle from 7.2.0 to 7.2.1 (#411)

Bumps gradle from 7.2.0 to 7.2.1.

---
updated-dependencies:
- dependency-name: com.android.tools.build:gradle
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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build.gradle

@@ -8,7 +8,7 @@ buildscript {
         jcenter() // jp2-android
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.0'
+        classpath 'com.android.tools.build:gradle:7.2.1'
     }
 }