chore: bump mitt from 2.1.0 to 3.0.1

Bumps [mitt](https://github.com/developit/mitt) from 2.1.0 to 3.0.1.
- [Release notes](https://github.com/developit/mitt/releases)
- [Commits](developit/mitt@2.1.0...3.0.1)

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

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

packages/_test/package.json

@@ -43,7 +43,7 @@
     "@contentful/f36-tokens": "^4.0.0",
     "emotion": "^10.0.17",
     "lodash": "^4.17.15",
-    "mitt": "2.1.0"
+    "mitt": "3.0.1"
   },
   "peerDependencies": {
     "@contentful/app-sdk": "^4.2.0",

yarn.lock

@@ -20872,6 +20872,11 @@ mitt@2.1.0:
   resolved "https://registry.yarnpkg.com/mitt/-/mitt-2.1.0.tgz#f740577c23176c6205b121b2973514eade1b2230"
   integrity sha512-ILj2TpLiysu2wkBbWjAmww7TkZb65aiQO+DkVdUTBpBXq+MHYiETENkKFMtsJZX1Lf4pe4QOrTSjIfUwN5lRdg==
 
+mitt@3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/mitt/-/mitt-3.0.1.tgz#ea36cf0cc30403601ae074c8f77b7092cdab36d1"
+  integrity sha512-vKivATfr97l2/QBCYAkXYDbrIWPM2IIKEl7YPhjCvKlG3kE2gm+uBo6nEXK3M5/Ffh/FLpKExzOQ3JJoJGFKBw==
+
 mixin-deep@^1.2.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.2.tgz#1120b43dc359a785dce65b55b82e257ccf479566"