Bump version of zendesk_api for consistent test handling
Bump version of zendesk_api for consistent test handling

There was a change to zendesk_api at some point which added comment to
requests (see fix in:
https://github.com/alphagov/gds_zendesk/pull/46/commits/76b8f771183ffe0cb8ad63fed7a4f24c11151a3a)

This fix was applied inconsistently because the version of gds_zendesk
caused it. By updating to the current version we can make this test pass
consistently.

alphagov/gds_zendesk