Bump buefy from 0.5.4 to 0.7.2

Bumps [buefy](https://github.com/buefy/buefy) from 0.5.4 to 0.7.2.
- [Release notes](https://github.com/buefy/buefy/releases)
- [Changelog](https://github.com/buefy/buefy/blob/dev/CHANGELOG.md)
- [Commits](buefy/buefy@v0.5.4...v0.7.2)

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

Author: dependabot[bot]

package-lock.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@mapbox/leaflet-pip": "^1.1.0",
     "axios": "^0.16.2",
-    "buefy": "^0.5.2",
+    "buefy": "^0.7.2",
     "bulma": "^0.5.1",
     "contentful": "^4.6.1",
     "leaflet": "^1.2.0",