Bump actions/checkout from 3 to 4 (mne-tools#1166)

.github/workflows/cffconvert.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out a copy of the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check whether the citation metadata from CITATION.cff is valid
         uses: citation-file-format/[email protected]

.github/workflows/unit_tests.yml

@@ -23,7 +23,7 @@ jobs:
       matrix:
         python-version: ["3.11"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: psf/black@stable
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
@@ -67,7 +67,7 @@ jobs:
         python -m pip install --upgrade pip
         python -m pip install wheel setuptools build
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build sdist
       run: python -m build --sdist
     - name: Install sdist
@@ -81,7 +81,7 @@ jobs:
     - name: Remove sdist install
       run: python -m pip uninstall -y mne-bids
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build wheel
       run: python -m build --wheel
     - name: Install wheel
@@ -95,7 +95,7 @@ jobs:
     - name: Remove wheel install
       run: python -m pip uninstall -y mne-bids
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Test extras install
       run: |
         python -m pip install .[full]
@@ -145,7 +145,7 @@ jobs:
       TZ: Europe/Berlin
       FORCE_COLOR: true
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Node.js
       uses: actions/setup-node@v3