Fix website should have dep on xml library (#3155)

Getting into race condition where the website start building before the
xml library

packages/website/package.json

@@ -58,6 +58,7 @@
     "@typespec/playground-website": "workspace:*",
     "@typespec/protobuf": "workspace:~",
     "@typespec/rest": "workspace:~",
+    "@typespec/xml": "workspace:~",
     "@typespec/spec": "workspace:*",
     "@typespec/tspd": "workspace:~",
     "@typespec/versioning": "workspace:~",

pnpm-lock.yaml

@@ -1355,6 +1355,9 @@ importers:
       '@typespec/versioning':
         specifier: workspace:~
         version: link:../versioning
+      '@typespec/xml':
+        specifier: workspace:~
+        version: link:../xml
       dotenv:
         specifier: ~16.4.5
         version: 16.4.5