Bump actions/checkout from 3 to 4 (#3503)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/benchmark-core.yml

@@ -16,14 +16,14 @@ jobs:
 
     steps:
       - name: Checkout master
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: "yewstack/yew"
           ref: master
           path: yew-master
 
       - name: Checkout pull request
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: current-pr
 

.github/workflows/post-benchmark-core.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Download Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Download Artifact
         uses: Legit-Labs/action-download-artifact@v2