build(deps-dev): bump @types/node from 15.3.0 to 15.6.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 15.3.0 to 15.6.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

Author: dependabot-preview[bot]

package.json

@@ -79,7 +79,7 @@
         "@types/express": "4.17.11",
         "@types/jest": "26.0.23",
         "@types/js-yaml": "4.0.1",
-        "@types/node": "15.3.0",
+        "@types/node": "15.6.0",
         "@types/node-fetch": "2.5.10",
         "@types/qs": "6.9.6",
         "@typescript-eslint/eslint-plugin": "4.24.0",

yarn.lock

@@ -1416,10 +1416,10 @@
     "@types/node" "*"
     form-data "^3.0.0"
 
-"@types/node@*", "@types/node@15.3.0":
-  version "15.3.0"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.3.0.tgz#d6fed7d6bc6854306da3dea1af9f874b00783e26"
-  integrity sha512-8/bnjSZD86ZfpBsDlCIkNXIvm+h6wi9g7IqL+kmFkQ+Wvu3JrasgLElfiPgoo8V8vVfnEi0QVS12gbl94h9YsQ==
+"@types/node@*", "@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/normalize-package-data@^2.4.0":
   version "2.4.0"