Bump go_router from 12.1.3 to 13.0.0

Bumps [go_router](https://github.com/flutter/packages/tree/main/packages) from 12.1.3 to 13.0.0.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/go_router-v13.0.0/packages)

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

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

pubspec.lock

@@ -625,10 +625,10 @@ packages:
     dependency: "direct main"
     description:
       name: go_router
-      sha256: c5fa45fa502ee880839e3b2152d987c44abae26d064a2376d4aad434cf0f7b15
+      sha256: ca7e4a2249f96773152f1853fa25933ac752495cdd7fdf5dafb9691bd05830fd
       url: "https://pub.dev"
     source: hosted
-    version: "12.1.3"
+    version: "13.0.0"
   go_router_builder:
     dependency: "direct dev"
     description:

pubspec.yaml

@@ -57,7 +57,7 @@ dependencies:
   markdown: ^7.1.1
   pointycastle: ^3.7.3
   pigment: ^1.0.4
-  go_router: ^12.1.1
+  go_router: ^13.0.0
   image: ^4.1.3
   convert: ^3.1.1
   path: ^1.8.3