Bump http-status-codes from 2.1.2 to 2.1.3 in /packages/webapp

Bumps [http-status-codes](https://github.com/prettymuchbryce/node-http-status) from 2.1.2 to 2.1.3.
- [Release notes](https://github.com/prettymuchbryce/node-http-status/releases)
- [Commits](https://github.com/prettymuchbryce/node-http-status/compare/2.1.2...v2.1.3)

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

packages/webapp/package.json

@@ -18,7 +18,7 @@
     "gatsby-plugin-sharp": "2.6.35",
     "gatsby-source-filesystem": "2.3.29",
     "gatsby-transformer-sharp": "2.5.14",
-    "http-status-codes": "2.1.2",
+    "http-status-codes": "2.1.3",
     "jsonp": "0.2.1",
     "node-sass": "4.14.1",
     "path-browserify": "1.0.1",