Update dependency com.android.tools.build:gradle to v8.7.3 (#77)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 kotlin = "2.1.0"
 
 [libraries]
-android-gradlePlugin = "com.android.tools.build:gradle:8.7.2"
+android-gradlePlugin = "com.android.tools.build:gradle:8.7.3"
 assertk = "com.willowtreeapps.assertk:assertk:0.28.1"
 auto-service-annotations = { module = "com.google.auto.service:auto-service-annotations", version = "1.1.1" }
 auto-service-compiler = { module = "dev.zacsweers.autoservice:auto-service-ksp", version = "1.2.0" }