Bump actions/checkout from 6 to 6.0.2 (#16)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 6.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v6.0.2)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     name: Lint, typecheck, test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
       - uses: oven-sh/setup-bun@v2
       - run: bun install --frozen-lockfile
       - run: bun run lint:prettier
@@ -22,7 +22,7 @@ jobs:
     name: Integration tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
       - uses: oven-sh/setup-bun@v2
       - run: bun install --frozen-lockfile
       - run: bun run test:integration
@@ -31,7 +31,7 @@ jobs:
     name: Foundry tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
         with:
           submodules: recursive
       - uses: foundry-rs/foundry-toolchain@v1

.github/workflows/deploy-docs.yml

@@ -19,7 +19,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v6.0.2
       - uses: oven-sh/setup-bun@v2
       - run: bun install --cwd book
       - run: bun run --cwd book build