Iman

Fix json rendering of large osm ids

1

# Issue Fix #7016 ## Tasklist - [x] CHANGELOG.md entry ([How to write a changelog entry](http://keepachangelog.com/en/1.0.0/#how)) - [ ] update relevant [Wiki pages](https://github.com/Project-OSRM/osrm-backend/wiki) - [x] add tests (see [testing documentation](https://github.com/Project-OSRM/osrm-backend/blob/master/docs/testing.md))...