temporarily disable pytest-docker entirely on py<3.10

[pmrowla]

pytest-docker deps cannot be pip installed on 3.10+ or on pypy. Issue is with pyyaml<6/Cython install (which comes from pytest-docker): yaml/pyyaml#724

Collecting PyYAML<6,>=3.10 (from docker-compose<2.0,>=1.27.3->pytest-docker==0.12.0->scmrepo==1.0.5.dev4+gd3f663a)

see: https://github.com/iterative/scmrepo/actions/runs/5596450156/jobs/10233487390?pr=252

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (34280a5) 81.26% compared to head (f463ecd) 81.26%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #254   +/-   ##
=======================================
  Coverage   81.26%   81.26%           
=======================================
  Files          27       27           
  Lines        4020     4020           
  Branches      709      709           
=======================================
  Hits         3267     3267           
  Misses        630      630           
  Partials      123      123           

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