Bump ovsx from 0.9.1 to 0.9.4

Bumps [ovsx](https://github.com/eclipse/openvsx/tree/HEAD/cli) from 0.9.1 to 0.9.4.
- [Release notes](https://github.com/eclipse/openvsx/releases)
- [Changelog](https://github.com/eclipse/openvsx/blob/master/cli/CHANGELOG.md)
- [Commits](https://github.com/eclipse/openvsx/commits/v0.9.4/cli)

---
updated-dependencies:
- dependency-name: ovsx
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -133,7 +133,7 @@
   "devDependencies": {
     "@vscode/vsce": "^2.29.0",
     "js-yaml": "^4.1.0",
-    "ovsx": "^0.9.1",
+    "ovsx": "^0.9.4",
     "vscode-tmgrammar-test": "^0.1.3"
   }
 }