[url_launcher] Fix dependencies
diff --git a/packages/url_launcher/url_launcher/pubspec.yaml b/packages/url_launcher/url_launcher/pubspec.yaml
index 849edbc..0ec7409 100644
--- a/packages/url_launcher/url_launcher/pubspec.yaml
+++ b/packages/url_launcher/url_launcher/pubspec.yaml
@@ -25,20 +25,15 @@
 dependencies:
   flutter:
     sdk: flutter
-  # TODO(mvanbeusekom): Update to use pub.dev once null safety version is published.
-  url_launcher_platform_interface:
-    git:
-      url: https://github.com/flutter/plugins.git
-      ref: nnbd
-      path: packages/url_launcher/url_launcher_platform_interface
+  url_launcher_platform_interface: ^2.0.0-nullsafety
   # The design on https://flutter.dev/go/federated-plugins was to leave
   # this constraint as "any". We cannot do it right now as it fails pub publish
   # validation, so we set a ^ constraint.
   # TODO(amirh): Revisit this (either update this part in the  design or the pub tool).
   # https://github.com/flutter/flutter/issues/46264
-  url_launcher_linux: 0.1.0-nullsafety
-  url_launcher_macos: 0.1.0-nullsafety
-  url_launcher_windows: 0.1.0-nullsafety
+  url_launcher_linux: ^0.1.0-nullsafety
+  url_launcher_macos: ^0.1.0-nullsafety
+  url_launcher_windows: ^0.1.0-nullsafety
   # TODO(mvanbeusekom): Temporary disabled until web is migrated to nnbd (advised by @blasten).
   #url_launcher_web: ^0.1.3