Update "pac-proxy-agent" to v5

Author: TooTallNate

package.json

@@ -34,7 +34,7 @@
     "http-proxy-agent": "^4.0.0",
     "https-proxy-agent": "^5.0.0",
     "lru-cache": "^5.1.1",
-    "pac-proxy-agent": "^4.1.0",
+    "pac-proxy-agent": "^5.0.0",
     "proxy-from-env": "^1.0.0",
     "socks-proxy-agent": "^5.0.0"
   },