Bump actions/setup-python from 2 to 3 (#99)

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/cd_release.yml

@@ -23,7 +23,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.8
 

.github/workflows/ci_dependabot.yml

@@ -24,7 +24,7 @@ jobs:
         ref: main
 
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.8
 

.github/workflows/ci_tests.yml

@@ -18,7 +18,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.9
 
@@ -212,7 +212,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.9
 
@@ -403,7 +403,7 @@ jobs:
       uses: actions/checkout@v2
 
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.8
 
@@ -433,7 +433,7 @@ jobs:
         fetch-depth: 2
 
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: 3.8