Update .gitlab-ci.yml,corrected git_depth

1 job for patch-1 in 1 minute and 14 seconds (queued for 3 seconds)
Name Stage Failure
image_build Build
Pulling docker image docker:stable ...
Using docker image sha256:f038f0462ba57cd4635fffba0f75f3f4f7421775ce041956e3af0fee613b227d for docker:stable ...
Running on runner-S25j9XrP-project-2962-concurrent-0 via e78ef7c33048...
Fetching changes with git depth set to 1...
Initialized empty Git repository in /builds/gitlab/gitanjali.thakur/fpar-data/.git/
Created fresh repository.
error: RPC failed; HTTP 504 curl 22 The requested URL returned error: 504
fatal: the remote end hung up unexpectedly
ERROR: Job failed: exit code 1