Exchange git.bst for git-minimal.bst in build-depends

When building on top of freedesktop-sdk master,
builds fail due to an overlap issue between git
and git-minimal. This is resolved by using
git-minimal as a build-depend instead of git.
7 jobs for master in 61 minutes and 46 seconds (queued for 2 seconds)
Child pipeline (parent)
Status Job ID Name Coverage
  Prepare
passed #917122
gnome-build-meta x86_64
flatmgr-prepare

00:01:13

 
  Deploy
passed #917125
gnome-build-meta aarch64
flatmgr-aarch64

00:35:17

passed #917124
gnome-build-meta x86_64
flatmgr-i686

00:04:09

failed #917126
gnome-build-meta ppc64le allowed to fail
flatmgr-ppc64le

00:12:01

passed #917123
gnome-build-meta x86_64
flatmgr-x86_64

00:22:22

 
  Finish
passed #917127
gnome-build-meta x86_64
flatmgr-finish

00:25:15

skipped #917128
gnome-build-meta x86_64
flatmgr-finish-failed
 
Name Stage Failure
failed
flatmgr-ppc64le Deploy

Error while staging dependencies into a sandbox: 'No artifacts to stage'

No artifacts have been cached yet for that element
Try building the element first with `bst build`

Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1