drop py3.7 lint checks

Author: mr-c

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-  py3{7,8,9,10,11}-lint
+  py3{8,9,10,11}-lint
   py3{6,7,8,9,10,11}-unit
   py3{6,7,8,9,10,11}-bandit
   py3{7,8,9,10,11}-mypy
@@ -29,7 +29,7 @@ skipsdist =
 
 description =
   py3{6,7,8,9,10,11}-unit: Run the unit tests
-  py3{7,8,9,10,11}-lint: Lint the Python code
+  py3{8,9,10,11}-lint: Lint the Python code
   py3{6,7,8,9,10,11}-bandit: Search for common security issues
   py3{7,8,9,10,11}-mypy: Check for type safety
   py311-pydocstyle: docstring style checker
@@ -47,7 +47,7 @@ extras =
 deps =
   py3{6,7,8,9,10,11}-{unit,lint,bandit,mypy}: -rrequirements.txt
   py3{6,7,8,9,10,11}-{unit,mypy}: -rtest-requirements.txt
-  py3{7,8,9,10,11}-lint: -rlint-requirements.txt
+  py3{8,9,10,11}-lint: -rlint-requirements.txt
   py3{6,7,8,9,10,11}-bandit: bandit
   py3{6,7,8,9,10,11}-bandit: importlib_metadata != 4.8.0
   py3{7,8,9,10,11}-mypy: -rmypy-requirements.txt
@@ -67,7 +67,7 @@ commands_pre =
 commands =
   py3{6,7,8,9,10,11}-unit: make coverage-report coverage.xml PYTEST_EXTRA={posargs}
   py3{6,7,8,9,10,11}-bandit: bandit -r cwltool
-  py3{7,8,9,10,11}-lint: make flake8 format-check codespell-check
+  py3{8,9,10,11}-lint: make flake8 format-check codespell-check
   py3{7,8,9,10,11}-mypy: make mypy mypyc PYTEST_EXTRA={posargs}
   py37-mypy: make mypy_3.6
   py311-shellcheck: make shellcheck