Pin @vscode/vsce to 2.22.0

Version 2.23.0 introduces a bug which prevents us from publishing.

Author: remcohaszing

packages/vscode-mdx/package.json

@@ -47,7 +47,7 @@
     "@types/vscode": "^1.82.0",
     "@volar/language-server": "~2.0.0",
     "@volar/vscode": "~2.0.0",
-    "@vscode/vsce": "^2.0.0",
+    "@vscode/vsce": "2.22.0",
     "esbuild": "^0.19.0",
     "ovsx": "^0.8.0"
   },