Run mypy without dedicated action

.github/workflows/build-test-publish.yml

@@ -14,12 +14,17 @@ jobs:
         python-version: [ "3.10", "3.11", "3.12", "3.13.0-beta.4" ]
     steps:
       - uses: actions/checkout@v4
-      - uses: theCapypara/mypy-check@rust-support
-        name: Run type checks
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
         with:
-          mypy_flags: '--config-file mypy.ini'
-          requirements: '-r requirements.txt'
-          python_version: '${{ matrix.python-version }}'
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools
+          pip install -r requirements.txt mypy
+      - name: Run type checks
+        run: |
+          mypy --config-file mypy.ini
 
   build-sdist:
     name: Build SDist