fix(deps): update dependency @netlify/functions to ^1.6.0

Author: renovate[bot]

package-lock.json

@@ -12,7 +12,7 @@
   ],
   "dependencies": {
     "@netlify/esbuild": "0.14.39",
-    "@netlify/functions": "^1.5.0",
+    "@netlify/functions": "^1.6.0",
     "@netlify/ipx": "^1.4.0",
     "@vercel/node-bridge": "^2.1.0",
     "chalk": "^4.1.2",