Bump yaml from 3.1.1 to 3.1.2

Bumps [yaml](https://github.com/dart-lang/yaml) from 3.1.1 to 3.1.2.
- [Changelog](https://github.com/dart-lang/yaml/blob/master/CHANGELOG.md)
- [Commits](dart-lang/yaml@3.1.1...3.1.2)

---
updated-dependencies:
- dependency-name: yaml
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pubspec.lock

@@ -574,9 +574,9 @@ packages:
     dependency: "direct dev"
     description:
       name: yaml
-      sha256: "23812a9b125b48d4007117254bca50abb6c712352927eece9e155207b1db2370"
+      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.1"
+    version: "3.1.2"
 sdks:
   dart: ">=2.19.0 <3.0.0"