Use cache@v4 and checkout@v4

.github/workflows/code-quality.yml

@@ -12,7 +12,7 @@ jobs:
   ubuntu:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build River
         uses: ./.github/actions/install-env

.github/workflows/dev-docs.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build River
         uses: ./.github/actions/install-env

.github/workflows/pypi.yml

@@ -25,7 +25,7 @@ jobs:
           ]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up rust
         if: matrix.os != 'ubuntu-20.04' && matrix.os != 'ubuntu-22.04'
@@ -104,7 +104,7 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build River
         uses: ./.github/actions/install-env

.github/workflows/unit-tests.yml

@@ -18,21 +18,21 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build River
         uses: ./.github/actions/install-env
         with:
           python-version: "3.12"
 
       - name: Cache River datasets
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/river_data
           key: ${{ runner.os }}
 
       - name: Cache scikit-learn datasets
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/scikit_learn_data
           key: ${{ runner.os }}