chore(deps): update actions/checkout action to v6 (#187)

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

Author: renovate[bot]

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         node-version: [18.x, 20.x, 22.x, 24.x]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
         with:
           version: 10.23.0
@@ -65,7 +65,7 @@ jobs:
       CI: true
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: jdx/mise-action@v3
       - run: pnpm i --frozen-lockfile
       - name: test

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
       GITHUB_TOKEN: ${{ secrets.ACTION_GITHUB_TOKEN }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Need history for changelog generation
       - name: config git user