Pin typespec versioning to 0.57.0-dev.6

Author: timotheeguerin

package.json

@@ -13,7 +13,7 @@
     "@typespec/openapi": "next",
     "@typespec/openapi3": "next",
     "@typespec/rest": "next",
-    "@typespec/versioning": "next",
+    "@typespec/versioning": "0.57.0-dev.6",
     "azure-rest-api-specs-eng-tools": "file:eng/tools",
     "prettier": "~3.2.5",
     "typescript": "~5.4.5"