Bump actions/checkout from 3 to 4 (#277)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci_docs.yml

@@ -21,7 +21,7 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # fetch all history for all branches and tags
       - uses: actions/setup-python@v4

.github/workflows/ci_test-acts.yml

@@ -22,7 +22,7 @@ jobs:
     timeout-minutes: 15
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # fetch all history for all branches and tags
       - name: Set up Python ${{ matrix.python-version }}

.github/workflows/docs-deploy.yml

@@ -16,7 +16,7 @@ jobs:
       PATH_DATASETS: ${{ github.workspace }}/.datasets
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: publication
       - uses: actions/setup-python@v4