Merge pull request #7889 from docker/dependabot/pip/gitpython-3.1.11

Bump gitpython from 3.1.7 to 3.1.11

requirements-dev.txt

@@ -2,7 +2,7 @@ Click==7.1.2
 coverage==5.2.1
 ddt==1.4.1
 flake8==3.8.3
-gitpython==3.1.7
+gitpython==3.1.11
 mock==3.0.5
 pytest==6.0.1; python_version >= '3.5'
 pytest==4.6.5; python_version < '3.5'