Chore: Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # https://github.com/pnpm/action-setup
       - uses: pnpm/action-setup@v2

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # This makes Actions fetch all Git history so that Changesets can
           # generate changelogs with the correct commits.