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

Author: renovate[bot]

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     name: CI cache
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: cache
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [cache, lint]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           # pulls all commits (needed for lerna / semantic release to correctly version)
           fetch-depth: '0'