Bump @types/node from 14.14.41 to 15.12.1 in /ui

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.41 to 15.12.1.
- [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:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

ui/package.json

@@ -12,7 +12,7 @@
     "@testing-library/user-event": "^13.1.1",
     "@types/jest": "^26.0.22",
     "@types/lodash.uniqby": "4.7.6",
-    "@types/node": "^14.14.41",
+    "@types/node": "^15.12.1",
     "@types/react": "^17.0.3",
     "@types/react-dom": "^17.0.3",
     "@types/react-redux": "7.1.16",

ui/yarn.lock

@@ -1928,10 +1928,10 @@
   resolved "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
   integrity sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==
 
-"@types/node@*", "@types/node@^14.14.41":
-  version "14.14.41"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.41.tgz#d0b939d94c1d7bd53d04824af45f1139b8c45615"
-  integrity sha512-dueRKfaJL4RTtSa7bWeTK1M+VH+Gns73oCgzvYfHZywRCoPSd8EkXBL0mZ9unPTveBn+D9phZBaxuzpwjWkW0g==
+"@types/node@*", "@types/node@^15.12.1":
+  version "15.12.1"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.12.1.tgz#9b60797dee1895383a725f828a869c86c6caa5c2"
+  integrity sha512-zyxJM8I1c9q5sRMtVF+zdd13Jt6RU4r4qfhTd7lQubyThvLfx6yYekWSQjGCGV2Tkecgxnlpl/DNlb6Hg+dmEw==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"