Roll Plugins from 9da327c to 9302d87 (11 revisions) (#119825)

* 8f83dc2 [various] Standardize the extension for Pigeon-generated Dart (flutter#7029)

* 8fcff87 Roll Flutter from 75680ae to 0a22a1d (3 revisions) (flutter#7051)

* 3d81a00 [tool] More main-branch detection improvement (flutter#7067)

* e41f9f9 [ci] Clean up analysis options (flutter#7068)

* 4cf6f44 [in_app_puchase_storekit] handle `appStoreReceiptURL` is nil (flutter#7069)

* d5bab16 prepare for TestDefaultBinaryMessengerBinding.instance becoming non-nullable (flutter#6847)

* 36d8066 Roll Flutter from 0a22a1d to d278808 (58 revisions) (flutter#7078)

* ec46386 [various] prepare for more const widgets (flutter#7074)

* dbf8d8d Change google_sign_in_ios and image_picker_ios owners (flutter#7070)

* 1d4570b Update README.md (flutter#7076)

* 9302d87 [ci] More cirrus.yml pre-alignment with flutter/packages (flutter#7079)

bin/internal/flutter_plugins.version

@@ -1 +1 @@
-9da327ca39c4ab1ba51ec3bb9eb756759a305a2e
+9302d87ee5452344878eed7beb1835c959ab1d27