chore: Only look for Google produced artifacts in Google repositories (#530)

Optimise the `repositories` declaration with a Gradle content filter
that limits the `google()` repository to just Google artifacts. Results
in a slight speedup when checking repositories, as the `google()`
repository can be skipped when looking for non-Google artifacts.

settings.gradle.kts

@@ -1,6 +1,12 @@
 pluginManagement {
     repositories {
-        google()
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
         gradlePluginPortal()
     }
 
@@ -11,7 +17,13 @@ pluginManagement {
 dependencyResolutionManagement {
     repositoriesMode = RepositoriesMode.FAIL_ON_PROJECT_REPOS
     repositories {
-        google()
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
         mavenCentral()
         maven("https://jitpack.io")
     }