should unpin urllib3 when requests is compatible with urllib3 1.26
ERROR: Cannot install -r requirements.txt (line 3) and kubernetes because these package versions have conflicting dependencies. The conflict is caused by: kubernetes 12.0.0 depends on urllib3>=1.24.2 requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
as a workaround, https://github.com/ceph/ceph/pull/38021 is created. but we don't depend on a specific version of urllib3, neither do we depend on urllib3 directly (AFAIK).
so we should unpin and remove it once requests is compatible with urllib3 1.26.