fix: move off rc version of gax

Author: feywind

package.json

@@ -58,7 +58,7 @@
     "arrify": "^2.0.0",
     "extend": "^3.0.2",
     "google-auth-library": "^10.5.0",
-    "google-gax": "^5.0.1-rc.0",
+    "google-gax": "^5.0.5",
     "heap-js": "^2.6.0",
     "is-stream-ended": "^0.1.4",
     "lodash.snakecase": "^4.1.1",