Merge branch 'renovate/urllib3-1.x' into 'master'

Update dependency urllib3 to v1.26.7

See merge request openappstack/openappstack!523

docs/requirements.txt

@@ -63,7 +63,7 @@ sphinxcontrib-qthelp==1.0.3
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.5
     # via sphinx
-urllib3==1.26.6
+urllib3==1.26.7
     # via requests
 
 # The following packages are considered to be unsafe in a requirements file: