Bump actions/checkout from 2 to 4

.github/workflows/basic-tests.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Check out the target commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Qt dependencies
       uses: ./.github/actions/install-qt-support
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/bleeding-edge-tests.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Check out the target commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Qt dependencies
       uses: ./.github/actions/install-qt-support
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/full-qt-tests.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
     - name: Check out the target commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Qt dependencies
       uses: ./.github/actions/install-qt-support
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/full-wx-tests.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Check out the target commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:

.github/workflows/integration-tests.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:

.github/workflows/minimal-deps-tests.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:

.github/workflows/publish-on-pypi.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
     - name: Check out the release commit
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v2
       with:

.github/workflows/style-checks.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:

.github/workflows/test-build-documentation.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.11
       uses: actions/setup-python@v4
       with:

.github/workflows/test-etsdemo.yml

@@ -20,7 +20,7 @@ jobs:
         toolkit: ['pyside6']
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install Qt dependencies for Linux
         uses: ./.github/actions/install-qt-support
         if: startsWith(matrix.os, 'ubuntu')

.github/workflows/test-with-edm.yml

@@ -44,7 +44,7 @@ jobs:
       # set the font config path for linux
       FONTCONFIG_PATH: /etc/fonts
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install Qt dependencies for Linux
         uses: ./.github/actions/install-qt-support
         if: startsWith(matrix.os, 'ubuntu') && matrix.toolkit != 'wx' && matrix.toolkit != 'null'

.github/workflows/test-with-pip-wx.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with: