[Gradle]: Bump io.sentry.android.gradle from 6.1.0 to 6.6.0

Bumps [io.sentry.android.gradle](https://github.com/getsentry/sentry-android-gradle-plugin) from 6.1.0 to 6.6.0.
- [Release notes](https://github.com/getsentry/sentry-android-gradle-plugin/releases)
- [Changelog](https://github.com/getsentry/sentry-android-gradle-plugin/blob/main/CHANGELOG.md)
- [Commits](getsentry/sentry-android-gradle-plugin@6.1.0...6.6.0)

---
updated-dependencies:
- dependency-name: io.sentry.android.gradle
  dependency-version: 6.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

app/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id "com.android.application"
-    id "io.sentry.android.gradle" version "6.1.0"
+    id "io.sentry.android.gradle" version "6.6.0"
     id "com.google.gms.google-services"
 }