Handle submodules update before calling git lfs pull

Initial description taken from !1297 (closed):

Changes ordering of submodules handling and git lfs pull execution.

Resons:

1. Cleanup for !1298 (merged), which fixed the regression in 11.9.x
2. Additionally current implementation that we have contains another bug - calling submodules without checking out the main repository will most probably generate a failure.

Reordering the calls for submodules update and git lfs pull should fix both problems.