[docker] revert accidentally bumped infer version
[docker] revert accidentally bumped infer version

Summary: The version of infer in that file shouldn't be bumped until the release has been published on GitHub.

Reviewed By: jberdine

Differential Revision: D4810275

fbshipit-source-id: 1edd111

jvillard/infer,jvillard/infer,blzq/infer,jvillard/infer,jsachs/infer,ryoon/infer,ropas/infer,jsachs/infer,facebook/infer,blzq/infer,jsachs/infer,jvillard/infer,jsachs/infer,blzq/infer,facebook/infer,jsachs/infer,facebook/infer,facebook/infer,ropas/infer,ryoon/infer,ropas/infer,facebook/infer,blzq/infer,blzq/infer,ryoon/infer,facebook/infer,jvillard/infer,ropas/infer,jvillard/infer,jvillard/infer,ropas/infer,ryoon/infer,blzq/infer,ryoon/infer,facebook/infer,jsachs/infer,ryoon/infer,ropas/infer