Use gecko-dev as repository for service-nimbus

Author: badboy

repositories.yaml

@@ -190,12 +190,11 @@ libraries:
       The Nimbus Android-Component used by Fenix and Focus
     notification_emails:
       - [email protected]
-    url: https://github.com/mozilla-mobile/firefox-android
+    url: https://github.com/mozilla/gecko-dev
     metrics_files:
-      - android-components/components/service/nimbus/metrics.yaml
+      - mobile/android/android-components/components/service/nimbus/metrics.yaml
     variants:
       - v1_name: service-nimbus
-        branch: main
         dependency_name: org.mozilla.components:service-nimbus
 
   - library_name: gecko