Bump gradle from 7.3.0 to 7.3.1

Bumps gradle from 7.3.0 to 7.3.1.

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

Signed-off-by: dependabot[bot] <support@github.com>

app/build.gradle

@@ -3,7 +3,7 @@ import org.gradle.internal.jvm.Jvm
 
 buildscript {
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.3.0'
+        classpath 'com.android.tools.build:gradle:7.3.1'
         classpath 'com.hiya:jacoco-android:0.2'
         classpath 'com.github.spotbugs.snom:spotbugs-gradle-plugin:5.0.12'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"