Bump actions/setup-python from 2 to 4 (#1235)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2...v4)

---
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>
Co-authored-by: Todd Leonhardt <todd.leonhardt@gmail.com>

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
           # Set fetch-depth: 0 to fetch all history for all branches and tags.
           fetch-depth: 0 # Needed for setuptools_scm to work correctly
       - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
+        uses: actions/setup-python@v4  # https://github.com/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install python prerequisites

.github/workflows/doc.yml

@@ -22,7 +22,7 @@ jobs:
           # Set fetch-depth: 0 to fetch all history for all branches and tags.
           fetch-depth: 0 # Needed for setuptools_scm to work correctly
       - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
+        uses: actions/setup-python@v4  # https://github.com/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install python prerequisites

.github/workflows/format.yml

@@ -22,7 +22,7 @@ jobs:
           # Set fetch-depth: 0 to fetch all history for all branches and tags.
           fetch-depth: 0 # Needed for setuptools_scm to work correctly
       - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
+        uses: actions/setup-python@v4  # https://github.com/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install python prerequisites

.github/workflows/lint.yml

@@ -22,7 +22,7 @@ jobs:
           # Set fetch-depth: 0 to fetch all history for all branches and tags.
           fetch-depth: 0 # Needed for setuptools_scm to work correctly
       - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
+        uses: actions/setup-python@v4  # https://github.com/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install python prerequisites

.github/workflows/mypy.yml

@@ -22,7 +22,7 @@ jobs:
           # Set fetch-depth: 0 to fetch all history for all branches and tags.
           fetch-depth: 0 # Needed for setuptools_scm to work correctly
       - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
+        uses: actions/setup-python@v4  # https://github.com/actions/setup-python
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install python prerequisites