Bump actions/checkout from 3 to 4 (#482)

.github/workflows/cmake.yml

@@ -45,7 +45,7 @@ jobs:
 
     steps:
     - name: Checkout ${{ github.ref_name }}
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - run: git submodule update --init --recursive
     - name: set extra GITHUB_PATH ${{ matrix.config.extra_path }} (for MinGW)
       shell: bash

.github/workflows/cmake_subdir_example.yml

@@ -27,7 +27,7 @@ jobs:
           }
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: configure
       shell: cmake -P {0}
       run: |

.github/workflows/meson.yml

@@ -49,7 +49,7 @@ jobs:
           }
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     # use msvc-dev-cmd to setup the environment for MSVC if needed
     - name: setup MSVC
       if: matrix.config.requires_msvc