Bump @netlify/functions to ^3.1.8 (#46111)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -102,7 +102,7 @@
   },
   "dependencies": {
     "@googleapis/sheets": "^9.7.0",
-    "@netlify/functions": "^3.1.3",
+    "@netlify/functions": "^3.1.8",
     "@slack/bolt": "^4.2.1",
     "babel-plugin-transform-import-meta": "^2.3.2",
     "execa": "^9.5.2",