upgrade gradle build tools - 8.6.0

Bumps com.android.tools.build:gradle from 8.6.0 to 8.6.1.

---
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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle.kts

@@ -2,7 +2,7 @@ buildscript {
 
     dependencies {
         // https://developer.android.com/studio/releases/gradle-plugin
-        classpath("com.android.tools.build:gradle:8.6.0")
+        classpath("com.android.tools.build:gradle:8.6.1")
         // https://kotlinlang.org/releases.html
         classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20")
     }