Bump @types/node from 15.6.0 to 15.6.1 in /dashboard (#2876)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 15.6.0 to 15.6.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

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

dashboard/package.json

@@ -116,7 +116,7 @@
     "@types/enzyme": "^3.10.8",
     "@types/enzyme-adapter-react-16": "^1.0.6",
     "@types/jest": "^26.0.23",
-    "@types/node": "^15.6.0",
+    "@types/node": "^15.6.1",
     "@types/react-dom": "^17.0.5",
     "@types/react-helmet": "^6.1.1",
     "@types/react-redux": "^7.1.16",

dashboard/yarn.lock

@@ -2190,10 +2190,10 @@
   dependencies:
     axios "^0.21.1"
 
-"@types/node@*", "@types/node@>=13.7.0", "@types/node@^15.6.0":
-  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@*", "@types/node@>=13.7.0", "@types/node@^15.6.1":
+  version "15.6.1"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.6.1.tgz#32d43390d5c62c5b6ec486a9bc9c59544de39a08"
+  integrity sha512-7EIraBEyRHEe7CH+Fm1XvgqU6uwZN8Q7jppJGcqjROMT29qhAuuOxYB1uEY5UMYQKEmA5D+5tBnhdaPXSsLONA==
 
 "@types/node@14":
   version "14.14.43"