Bump google_sign_in from 5.2.4 to 5.3.0 in /experimental/web_dashboard (#1104)

Bumps [google_sign_in](https://github.com/flutter/plugins) from 5.2.4 to 5.3.0.
- [Release notes](https://github.com/flutter/plugins/releases)
- [Commits](https://github.com/flutter/plugins/compare/google_sign_in-v5.2.4...google_sign_in-v5.3.0)

---
updated-dependencies:
- dependency-name: google_sign_in
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

experimental/web_dashboard/pubspec.lock

@@ -309,7 +309,21 @@ packages:
       name: google_sign_in
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.2.4"
+    version: "5.3.0"
+  google_sign_in_android:
+    dependency: transitive
+    description:
+      name: google_sign_in_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.2.5"
+  google_sign_in_ios:
+    dependency: transitive
+    description:
+      name: google_sign_in_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.2.5"
   google_sign_in_platform_interface:
     dependency: transitive
     description: