Bump actions/setup-python from 2.3.2 to 4.6.1

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2.3.2 to 4.6.1.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v2.3.2...v4.6.1)

---
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>

.github/workflows/main.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v2.3.2
+      - uses: actions/setup-python@v4.6.1
         with:
           python-version: '3.9'
           cache: 'pip'
@@ -35,7 +35,7 @@ jobs:
         UBUNTU_VERSION: ["22.04"]
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v2.3.2
+      - uses: actions/setup-python@v4.6.1
         with:
           python-version: '3.9'
           cache: 'pip'
@@ -99,7 +99,7 @@ jobs:
         UBUNTU_VERSION: ["22.04"]
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v2.3.2
+      - uses: actions/setup-python@v4.6.1
         with:
           python-version: '3.9'
           cache: 'pip'