Bump used GH actions

.github/workflows/btest.yml

@@ -29,9 +29,9 @@ jobs:
         run: |
             git config --global core.autocrlf false
             git config --global core.eol lf
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
             python-version: ${{ matrix.python-version }}
       - name: Install dependencies (Windows)
@@ -69,10 +69,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
             python-version: ${{ matrix.python-version }}
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: "Install pip and the btest package"
         run: |
             python3 -m pip install --upgrade pip
@@ -92,7 +92,7 @@ jobs:
     needs: [Run-BTest, Test-SetupPY]
     if: github.repository == 'zeek/btest' && github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check release version
         # This fails e.g. if VERSION contains a dev commits suffix,
         # since we don't want to push these to PyPI. Accepts two-