chore(deps-dev): bump @types/node from 12.20.10 to 15.0.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.20.10 to 15.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

Author: dependabot[bot]

package.json

@@ -42,7 +42,7 @@
     "@types/express": "^4.17.8",
     "@types/http-proxy": "^1.17.4",
     "@types/js-yaml": "^4.0.0",
-    "@types/node": "~12.20.7",
+    "@types/node": "~15.0.0",
     "@types/parcel-bundler": "^1.12.1",
     "@types/pem": "^1.9.5",
     "@types/proxy-from-env": "^1.0.1",

yarn.lock

@@ -1101,10 +1101,10 @@
   resolved "https://registry.yarnpkg.com/@types/minimist/-/minimist-1.2.1.tgz#283f669ff76d7b8260df8ab7a4262cc83d988256"
   integrity sha512-fZQQafSREFyuZcdWFAExYjBiCL7AUCdgsk80iO0q4yihYYdcIiH28CcuPTGFgLOCC8RlW49GSQxdHwZP+I7CNg==
 
-"@types/node@*", "@types/node@~12.20.7":
-  version "12.20.10"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.20.10.tgz#4dcb8a85a8f1211acafb88d72fafc7e3d2685583"
-  integrity sha512-TxCmnSSppKBBOzYzPR2BR25YlX5Oay8z2XGwFBInuA/Co0V9xJhLlW4kjbxKtgeNo3NOMbQP1A5Rc03y+XecPw==
+"@types/node@*", "@types/node@~15.0.0":
+  version "15.0.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-15.0.0.tgz#557dd0da4a6dca1407481df3bbacae0cd6f68042"
+  integrity sha512-YN1d+ae2MCb4U0mMa+Zlb5lWTdpFShbAj5nmte6lel27waMMBfivrm0prC16p/Di3DyTrmerrYUT8/145HXxVw==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
@@ -4551,11 +4551,6 @@ isstream@~0.1.2:
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
   integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
 
-istanbul-badges-readme@^1.2.0:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/istanbul-badges-readme/-/istanbul-badges-readme-1.2.1.tgz#aea1891f4515ddfe7f62704cba87bd25cccfcce0"
-  integrity sha512-/rXtmpI0bzdmgaeZrutA5vL6c0NikSRRfBmjVxS0yJgU1o5elQARXiFQTiakkxGCrI2vS/k4X6zjGrV+32FJFQ==
-
 js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"