Bump js-yaml from 3.13.1 to 4.1.1 in /packages/typespec-powershell

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.13.1 to 4.1.1.
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](nodeca/js-yaml@3.13.1...4.1.1)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 4.1.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/typespec-powershell/package.json

@@ -25,7 +25,7 @@
     "@azure-tools/linq": "~3.1.0",
     "@azure-tools/tasks": "~3.0.0",
     "ejs": "~3.1.8",
-    "js-yaml": "3.13.1",
+    "js-yaml": "4.1.1",
     "source-map-support": "0.5.13",
     "xmlbuilder": "10.1.1"
   },