chore(deps-dev): bump apollo from 2.11.0 to 2.12.5

Bumps [apollo](https://github.com/apollographql/apollo-tooling) from 2.11.0 to 2.12.5.
- [Release notes](https://github.com/apollographql/apollo-tooling/releases)
- [Changelog](https://github.com/apollographql/apollo-tooling/blob/master/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-tooling/compare/apollo@2.11.0...apollo@2.12.5)

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

Author: dependabot-preview[bot]

package.json

@@ -50,6 +50,6 @@
     "@types/react-leaflet": "^2.2.1",
     "@types/react-router-dom": "^4.3.2",
     "@types/styled-components": "^4.1.14",
-    "apollo": "2.11.0"
+    "apollo": "2.12.5"
   }
 }