chore: Bump aws-sdk (#752)

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.863.0 to 2.888.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-js@v2.863.0...v2.888.0)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

modules/webhook/lambdas/webhook/package.json

@@ -18,7 +18,7 @@
     "@octokit/webhooks-definitions": "^3.67.3",
     "@types/express": "^4.17.11",
     "@types/jest": "^26.0.22",
-    "@types/node": "^14.14.41",
+    "@types/node": "^15.12.2",
     "@typescript-eslint/eslint-plugin": "^4.22.0",
     "@typescript-eslint/parser": "^4.22.0",
     "@zeit/ncc": "^0.22.1",

modules/webhook/lambdas/webhook/yarn.lock

@@ -779,16 +779,11 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
   integrity sha512-YATxVxgRqNH6nHEIsvg6k2Boc1JHI9ZbH5iWFFv/MTkchz3b1ieGDa5T0a9RznNdI0KhVbdbWSN+KWWrQZRxTw==
 
-"@types/node@*":
+"@types/node@*", "@types/node@^15.12.2":
   version "15.12.2"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-15.12.2.tgz#1f2b42c4be7156ff4a6f914b2fb03d05fa84e38d"
   integrity sha512-zjQ69G564OCIWIOHSXyQEEDpdpGl+G348RAKY0XXy9Z5kU9Vzv1GMNnkar/ZJ8dzXB3COzD9Mo9NtRZ4xfgUww==
 
-"@types/node@^14.14.41":
-  version "14.17.3"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.17.3.tgz#6d327abaa4be34a74e421ed6409a0ae2f47f4c3d"
-  integrity sha512-e6ZowgGJmTuXa3GyaPbTGxX17tnThl2aSSizrFthQ7m9uLGZBXiGhgE55cjRZTF5kjZvYn9EOPOMljdjwbflxw==
-
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"