Test Python 3.7 and 3.8 separately

The package cannot be built with these Python versions
since  they do not support the required setuptools version.
So we just test the pre-built wheels in dist.

Author: Cito

.github/workflows/test_with_tox.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v4

tox.ini

@@ -1,34 +1,39 @@
 [tox]
-envlist = py3{7,8,9,10,11,12,13}, ruff, manifest, docs, spell
+envlist = py3{9,10,11,12,13}, ruff, manifest, docs, spell
+
+[testenv:py37]
+skip_install = true
+deps = dist/dbutils-3.1.1-py3-none-any.whl[tests]
+commands = pytest {posargs}
+
+[testenv:py38]
+skip_install = true
+deps = dist/dbutils-3.1.1-py3-none-any.whl[tests]
+commands = pytest {posargs}
 
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}
 extras = tests
-commands =
-    pytest {posargs}
+commands = pytest {posargs}
 
 [testenv:spell]
 basepython = python3.12
 deps = codespell
-commands =
-    codespell .
+commands = codespell .
 
 [testenv:ruff]
 basepython = python3.12
 deps = ruff
-commands =
-    ruff check .
+commands = ruff check .
 
 [testenv:manifest]
 basepython = python3.12
 deps = check-manifest
-commands =
-    check-manifest -v
+commands = check-manifest -v
 
 [testenv:docs]
 basepython = python3.12
 extras = docs
 changedir = docs
-commands =
-    python make.py
+commands = python make.py