Upgrade to execa 6.0.0 in storage-file-datalake package. (Azure#19522)

Author: EmmaZhu

common/config/rush/pnpm-lock.yaml

@@ -136,7 +136,7 @@
     "es6-promise": "^4.2.5",
     "eslint": "^7.15.0",
     "esm": "^3.2.18",
-    "execa": "^5.0.0",
+    "execa": "^6.0.0",
     "inherits": "^2.0.3",
     "karma": "^6.2.0",
     "karma-chrome-launcher": "^3.0.0",