chore: update dependency aws-sdk to ^2.518.0 (#17097)

Author: renovate[bot]

packages/gatsby-transformer-screenshot/lambda/package.json

@@ -4,7 +4,7 @@
     "tar": "^4.4.10"
   },
   "devDependencies": {
-    "aws-sdk": "^2.517.0"
+    "aws-sdk": "^2.518.0"
   },
   "keywords": [
     "gatsby-plugin"