build(deps): bump the pub group across 1 directory with 2 updates

Bumps the pub group with 2 updates in the /example directory: [build_runner](https://github.com/dart-lang/build) and [go_router](https://github.com/flutter/packages/tree/main/packages).


Updates `build_runner` from 2.4.11 to 2.4.13
- [Release notes](https://github.com/dart-lang/build/releases)
- [Commits](dart-lang/build@build_runner-v2.4.11...build_runner-v2.4.13)

Updates `go_router` from 14.3.0 to 14.6.0
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/go_router-v14.6.0/packages)

---
updated-dependencies:
- dependency-name: build_runner
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pub
- dependency-name: go_router
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pub
...

Signed-off-by: dependabot[bot] <[email protected]>

example/pubspec.lock

@@ -117,10 +117,10 @@ packages:
     dependency: "direct dev"
     description:
       name: build_runner
-      sha256: "644dc98a0f179b872f612d3eb627924b578897c629788e858157fa5e704ca0c7"
+      sha256: "028819cfb90051c6b5440c7e574d1896f8037e3c96cf17aaeb054c9311cfbf4d"
       url: "https://pub.dev"
     source: hosted
-    version: "2.4.11"
+    version: "2.4.13"
   build_runner_core:
     dependency: transitive
     description:
@@ -360,10 +360,10 @@ packages:
     dependency: "direct main"
     description:
       name: go_router
-      sha256: "6f1b756f6e863259a99135ff3c95026c3cdca17d10ebef2bba2261a25ddc8bbc"
+      sha256: "8ae664a70174163b9f65ea68dd8673e29db8f9095de7b5cd00e167c621f4fef5"
       url: "https://pub.dev"
     source: hosted
-    version: "14.3.0"
+    version: "14.6.0"
   go_router_builder:
     dependency: "direct dev"
     description:
@@ -480,18 +480,18 @@ packages:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
+      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
       url: "https://pub.dev"
     source: hosted
-    version: "0.8.0"
+    version: "0.11.1"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: "7687075e408b093f36e6bbf6c91878cc0d4cd10f409506f7bc996f68220b9136"
+      sha256: bdb68674043280c3428e9ec998512fb681678676b3c54e773629ffe74419f8c7
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.15.0"
   mime:
     dependency: transitive
     description:

example/pubspec.yaml

@@ -8,12 +8,12 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  go_router: ^14.2.1
+  go_router: ^14.6.0
   swipeable_page_route:
     path: ../
 
 dev_dependencies:
-  build_runner: ^2.4.10
+  build_runner: ^2.4.13
   go_router_builder: ^2.7.0
   supernova:
     git: