Make test requirements reproducible

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>

test-requirements.txt

@@ -1,9 +1,32 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
+coverage==7.4.3
+pytest==8.0.2
+tox==4.13.0
+black==24.2.0
+flake8==7.0.0
 
-coverage
-pytest
-tox
-black
-flake8
+# The packages below are transitive dependencies of the packages above and are included here
+# to make testing reproducible.
+# To refresh, create a new virtualenv and do:
+#  pip install -r requirements.txt -r test-requirements.txt
+#  pip freeze > test-requirements.txt
+# and edit test-requirements.txt to add this comment
+
+cachetools==5.3.3
+chardet==5.2.0
+click==8.1.7
+colorama==0.4.6
+distlib==0.3.8
+filelock==3.13.1
+iniconfig==2.0.0
+mccabe==0.7.0
+mypy-extensions==1.0.0
+packaging==23.2
+pathspec==0.12.1
+platformdirs==4.2.0
+pluggy==1.4.0
+pycodestyle==2.11.1
+pyflakes==3.2.0
+pyproject-api==1.6.1
+python-dotenv==1.0.1
+PyYAML==6.0.1
+virtualenv==20.25.1