CI: exclude linting dependencies from the unittest environment.

Author: mbyrnepr2

.github/workflows/checks.yaml

@@ -63,6 +63,7 @@ jobs:
           python -m pip install -U pip setuptools wheel
           pip install -U -r requirements_test.txt
           pip install -U -r doc/requirements.txt
+          pip install pre-commit
       - name: Generate pre-commit restore key
         id: generate-pre-commit-key
         run: >-

requirements_test.txt

@@ -1,4 +1,3 @@
--r requirements_test_pre_commit.txt
 -r requirements_test_min.txt
 coverage~=7.2
 tbump~=6.10.0