Bump actions/checkout from 5 to 6

.github/workflows/codeql.yml

@@ -32,7 +32,7 @@ jobs:
           build-mode: autobuild
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Set SDL2 default
       run: |
         sed -i 's/WITH_SDL3:=yes/WITH_SDL3:=no/g' Makefile

.github/workflows/linux_aarch64.yml

@@ -31,7 +31,7 @@ jobs:
         sudo apt install libgl1-mesa-dev libsdl2-dev libopenal-dev libcurl4-openssl-dev \
             libavformat-dev libswscale-dev libvulkan-dev build-essential
     - name: Check out repository code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Build
       run: |
         # Public runners come with 4 CPUs.

.github/workflows/linux_x86_64.yml

@@ -36,7 +36,7 @@ jobs:
         install-linux-dependencies: true
         version: 3-latest
     - name: Check out repository code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Build
       run: |
         # Public runners come with 4 CPUs.

.github/workflows/macos.yml

@@ -30,7 +30,7 @@ jobs:
         brew update
         brew install sdl3 openal-soft make molten-vk
     - name: Check out repository code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Build
       run: |
         # Public runners come with 3 CPUs.

.github/workflows/win32.yml

@@ -41,7 +41,7 @@ jobs:
           mingw-w64-${{matrix.env}}-vulkan-headers
           mingw-w64-${{matrix.env}}-pkgconf
     - name: Check out repository code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Build
       shell: msys2 {0}
       run: |

.github/workflows/win64.yml

@@ -40,7 +40,7 @@ jobs:
           mingw-w64-${{matrix.env}}-vulkan-headers
           mingw-w64-${{matrix.env}}-pkgconf
     - name: Check out repository code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Build
       shell: msys2 {0}
       run: |