chore(deps): Update actions/checkout action to v6 (#109)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     name: Test
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Node
         uses: actions/setup-node@v6
         with:

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       new-release-version: ${{ steps.semantic-release.outputs.new_release_version }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Node
         uses: actions/setup-node@v6