chore(deps): bump actions/checkout from 6 to 6.0.3 (#839)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 6.0.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v6...v6.0.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/ci.yaml

@@ -36,7 +36,7 @@ jobs:
           apt-get install -y wget tar git make curl ${{ matrix.gtk_packages }}
 
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
         with:
           submodules: recursive
 
@@ -112,7 +112,7 @@ jobs:
         uses: microsoft/setup-msbuild@v3.0.0
 
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
         with:
           submodules: recursive
 

.github/workflows/linting.yaml

@@ -21,7 +21,7 @@ jobs:
           apt-get install -y wget tar git make curl
 
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
 
       - name: Configure clang
         uses: ./.github/actions/configure-clang
@@ -41,7 +41,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
 
       - name: Install node
         uses: actions/setup-node@v6.4.0

.github/workflows/release.yaml

@@ -22,7 +22,7 @@ jobs:
           apt-get install -y wget tar git make curl
 
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
         with:
           submodules: recursive
 
@@ -57,7 +57,7 @@ jobs:
     runs-on: windows-2025-vs2026
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.3
         with:
           submodules: recursive