Bump @types/node from 15.0.2 to 15.3.1 (#176)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 15.0.2 to 15.3.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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web/package-lock.json

@@ -344,9 +344,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "15.0.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.0.2.tgz",
-      "integrity": "sha512-p68+a+KoxpoB47015IeYZYRrdqMUcpbK8re/zpFB8Ld46LHC1lPEbp3EXgkEhAYEcPvjJF6ZO+869SQ0aH1dcA=="
+      "version": "15.3.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.3.1.tgz",
+      "integrity": "sha512-weaeiP4UF4XgF++3rpQhpIJWsCTS4QJw5gvBhQu6cFIxTwyxWIe3xbnrY/o2lTCQ0lsdb8YIUDUvLR4Vuz5rbw=="
     },
     "@types/prop-types": {
       "version": "15.7.3",

web/package.json

@@ -30,7 +30,7 @@
     "@types/chart.js": "^2.9.32",
     "@types/classnames": "^2.3.1",
     "@types/markdown-it": "^12.0.1",
-    "@types/node": "^15.0.2",
+    "@types/node": "^15.3.1",
     "@types/prop-types": "^15.7.3",
     "@types/react": "^17.0.5",
     "@types/react-linkify": "^1.0.0",