Move aws-sdk to dev dependency

It is already pre-installed for AWS Lambda:
https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html

Author: openfirmware

package.json

@@ -8,10 +8,10 @@
   "private": true,
   "dependencies": {
     "@thi.ng/geom-hull": "^0.0.35",
-    "aws-sdk": "^2.645.0",
     "bent": "^7.1.0"
   },
   "devDependencies": {
+    "aws-sdk": "^2.645.0",
     "express": "^4.17.1",
     "pug": "^2.0.4"
   }