ci: bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/stage.yml

@@ -52,7 +52,7 @@ jobs:
     runs-on: ${{ inputs.os }}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1 # Shallow clone for faster checkout
 
@@ -115,7 +115,7 @@ jobs:
       # Checkout repository
       - name: Checkout Repository
         if: ${{ !contains(github.ref_name, inputs.prerelease_suffix) }}
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1 # Shallow clone for faster checkout
 
@@ -141,7 +141,7 @@ jobs:
     runs-on: ${{ inputs.os }}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1 # Shallow clone for faster checkout
 

.github/workflows/test.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{ inputs.os }}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1 # Shallow clone for faster checkout