fix: package.json & package-lock.json to reduce vulnerabilities (#136)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AWSSDK-1059424

Author: snyk-bot

package-lock.json

@@ -25,7 +25,7 @@
   },
   "homepage": "https://github.com/parse-community/parse-server-s3-adapter#readme",
   "dependencies": {
-    "aws-sdk": "2.801.0"
+    "aws-sdk": "2.814.0"
   },
   "devDependencies": {
     "parse": "2.19.0",