chore: Bump @types/node in /modules/webhook/lambdas/webhook

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.17.0 to 15.12.2.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@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

@@ -766,15 +766,10 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
   integrity sha512-YATxVxgRqNH6nHEIsvg6k2Boc1JHI9ZbH5iWFFv/MTkchz3b1ieGDa5T0a9RznNdI0KhVbdbWSN+KWWrQZRxTw==
 
-"@types/node@*":
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.6.0.tgz#f0ddca5a61e52627c9dcb771a6039d44694597bc"
-  integrity sha512-gCYSfQpy+LYhOFTKAeE8BkyGqaxmlFxe+n4DKM6DR0wzw/HISUE/hAmkC/KT8Sw5PCJblqg062b3z9gucv3k0A==
-
-"@types/node@^14.14.41":
-  version "14.17.0"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.17.0.tgz#3ba770047723b3eeb8dc9fca02cce8a7fb6378da"
-  integrity sha512-w8VZUN/f7SSbvVReb9SWp6cJFevxb4/nkG65yLAya//98WgocKm5PLDAtSs5CtJJJM+kHmJjO/6mmYW4MHShZA==
+"@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/normalize-package-data@^2.4.0":
   version "2.4.0"