Bump actions/setup-python from 2 to 3 (#323)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 3.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2...v3)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/Pipi.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       # Setup steps
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: '3.8'
       - name: Checkout repo

.github/workflows/pytest.yml

@@ -45,7 +45,7 @@ jobs:
     steps:
       # Setup and installation
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
       - name: Checkout repo