chore(deps): bump com.android.tools.build:gradle

Bumps com.android.tools.build:gradle from 8.5.0 to 8.6.1.

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

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

tutorials/kotlin/Polygons/build.gradle.kts

@@ -23,7 +23,7 @@ buildscript {
  google()
  }
  dependencies {
- classpath("com.android.tools.build:gradle:8.5.0")
+ classpath("com.android.tools.build:gradle:8.6.1")
  classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
  classpath("com.google.android.libraries.mapsplatform.secrets-gradle-plugin:secrets-gradle-plugin:2.0.1")