Tighten dependency on gitlab-shell and relax dependency on gitlab-common

debian/control

@@ -19,7 +19,7 @@ Section: contrib/net
 Architecture: all
 XB-Ruby-Versions: ${ruby:Versions}
 Depends: ${shlibs:Depends}, ${misc:Depends},
- gitlab-common (= ${source:Version}),
+ gitlab-common (>= 12.8.6~),
  ruby (>= 1:2.5~),
  lsb-base (>= 3.0-6),
  rake (>= 12.3.0~),
@@ -435,7 +435,7 @@ Depends: ${shlibs:Depends}, ${misc:Depends},
  adduser (>= 3.34~),
  git (>= 1:2.24~),
  ucf,
- gitlab-shell (>= 10.0~)
+ gitlab-shell (>= 11.0~)
 Description: git powered software platform to collaborate on code (common)
  gitlab provides web based interface to host source code and track issues.
  It allows anyone for fork a repository and send merge requests. Code review