chore(deps): bump googleapis_auth from 1.6.0 to 2.0.0

Bumps [googleapis_auth](https://github.com/google/googleapis.dart) from 1.6.0 to 2.0.0.
- [Release notes](https://github.com/google/googleapis.dart/releases)
- [Commits](google/googleapis.dart@googleapis_auth-v1.6.0...googleapis_auth-v2.0.0)

---
updated-dependencies:
- dependency-name: googleapis_auth
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pubspec.lock

@@ -718,10 +718,10 @@ packages:
     dependency: "direct main"
     description:
       name: googleapis_auth
-      sha256: befd71383a955535060acde8792e7efc11d2fccd03dd1d3ec434e85b68775938
+      sha256: b81fe352cc4a330b3710d2b7ad258d9bcef6f909bb759b306bf42973a7d046db
       url: "https://pub.dev"
     source: hosted
-    version: "1.6.0"
+    version: "2.0.0"
   graphs:
     dependency: transitive
     description:

pubspec.yaml

@@ -52,7 +52,7 @@ dependencies:
 
   # Google APIs for Local Integration
   googleapis: ^16.0.0
-  googleapis_auth: ^1.6.0
+  googleapis_auth: ^2.0.0
   google_sign_in: ^6.3.0
 
   # System Integration - Flutter plugins for window management and secure storage