no need for separate requirements-skip folder anymore

requirements-skip/README.md

@@ -1,2 +0,0 @@
-Dependabot will only update files in the `requirements` directory. This directory is
-separate because the pins in here should not be updated automatically.

tox.ini

@@ -17,8 +17,8 @@ constrain_package_deps = true
 use_frozen_constraints = true
 deps =
     -r requirements/tests.txt
-    min: -r requirements-skip/tests-min.txt
+    min: -r requirements/tests-min.txt
-    dev: -r requirements-skip/tests-dev.txt
+    dev: -r requirements/tests-dev.txt
 commands = pytest -v --tb=short --basetemp={envtmpdir} {posargs}
 
 [testenv:style]
@@ -39,6 +39,7 @@ commands = sphinx-build -E -W -b dirhtml docs docs/_build/dirhtml
 [testenv:update-actions]
 labels = update
 deps = gha-update
+skip_install = true
 commands = gha-update
 
 [testenv:update-pre_commit]