Bump mime-types from 2.1.27 to 2.1.29

Bumps [mime-types](https://github.com/jshttp/mime-types) from 2.1.27 to 2.1.29.
- [Release notes](https://github.com/jshttp/mime-types/releases)
- [Changelog](https://github.com/jshttp/mime-types/blob/master/HISTORY.md)
- [Commits](jshttp/mime-types@2.1.27...2.1.29)

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

package.json

@@ -31,7 +31,7 @@
     "koa-router": "^10.0.0",
     "koa-send": "^5.0.0",
     "mem": "^8.0.0",
-    "mime-types": "^2.1.27",
+    "mime-types": "^2.1.29",
     "nile": "git+https://github.com/ovsoinc/node-nile.git",
     "nodemon": "^2.0.6",
     "pretty-bytes": "git+https://git@github.com/ovsoinc/pretty-bytes#bf25220869dd18b71f7a69709040b7940e7609bb",