update tox.ini and test.yml to use pytest

pytest was added to pyright section of the test.yml becasue
pyright requires pytest to be present during type-checking of test
files.

Author: 5j9

.github/workflows/test.yml

@@ -64,7 +64,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pyright
+          pip install pyright pytest
           pip install -e .
       - name: Run pyright
         run: pyright

pyproject.toml

@@ -52,4 +52,5 @@ lint.ignore = [
 dev = [
     "pytest>=8.4.2",
     "tox>=4.30.3",
+    "tzdata; sys_platform == 'win32'",
 ]

tox.ini

@@ -15,5 +15,6 @@ python =
 deps =
     # Install tzdata for support zoneinfo on Windows
     tzdata; platform_system == "Windows"
+    pytest
 commands =
-    python -m unittest discover tests -v
+    pytest