Use py310 in lint workflow

Author: caleb-johnson

tox.ini

@@ -21,6 +21,7 @@ commands =
   nbqa ruff --fix docs/
 
 [testenv:lint]
+basepython = py310
 image-tester-commit = 7ae965ccf21c39e5170334ec7f4882756883860a
 deps = 
   git+https://github.com/Qiskit/documentation.git@{[testenv:lint]image-tester-commit}\#egg=sphinx-alt-text-validator&subdirectory=scripts/image-tester