Update actions/checkout action to v6.0.3

Author: renovate[bot]

.github/workflows/actionlint.yml

@@ -9,7 +9,7 @@ jobs:
     name: runner / actionlint
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: actionlint
         uses: reviewdog/action-actionlint@v1.72.0

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
     runs-on: ${{ matrix.ghimage }}
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
         with:
           submodules: true
 
@@ -142,7 +142,7 @@ jobs:
     runs-on: ${{ matrix.ghimage }}
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Get Rust toolchain
         id: toolchain
@@ -196,7 +196,7 @@ jobs:
     runs-on: ${{ matrix.ghimage }}
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - uses: docker/metadata-action@v6.1.0
         id: meta

.github/workflows/review.yml

@@ -33,7 +33,7 @@ jobs:
     runs-on: ${{ matrix.ghimage }}
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Get Rust toolchain
         id: toolchain