Bump actions/setup-python to v4

Author: niklasf

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - run: .github/workflows/setup-${{ matrix.os }}.sh
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.10"
       - run: pip install -e .
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - run: pip install -e .
@@ -53,7 +53,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.10"
       - run: sudo apt-get update && sudo apt-get install -y docutils-common