update tsp compiler to 0.64.0 and liftr 0.7.0 (#445)

* update compiler to 0.64.0

* update lift to 0.7.0

Author: AllyW

package.json

@@ -17,7 +17,7 @@
   "devDependencies": {
     "@pnpm/find-workspace-packages": "^6.0.9",
     "@pnpm/logger": "^5.0.0",
-    "@azure-tools/typespec-liftr-base": "^0.6.0",
+    "@azure-tools/typespec-liftr-base": "^0.7.0",
     "rimraf": "~5.0.5"
   },
   "syncpack": {