chore(deps): bump actions/checkout from 4 to 5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/canbench-post-comment.yml

@@ -13,7 +13,7 @@ jobs:
       matrix: ${{ steps.set-benchmarks.outputs.matrix }}
       pr_number: ${{ steps.set-benchmarks.outputs.pr_number }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: dawidd6/action-download-artifact@ac66b43f0e6a346234dd65d4d0c8fbb31cb316e5
         with:

.github/workflows/ci-notify-slack.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Sanitize PR title
         id: sanitize

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Cache Cargo
         uses: actions/cache@v4
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/cache@v4
         with:
           path: |
@@ -114,10 +114,10 @@ jobs:
 
     steps:
       - name: Checkout current PR
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Checkout baseline branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: main
           path: _canbench_baseline_branch
@@ -163,7 +163,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Save PR number
         run: |

.github/workflows/pages.yml

@@ -25,7 +25,7 @@ jobs:
       MDBOOK_LINKCHECK_VERSION: 0.7.7
       RUST_VERSION: 1.84.0 # Use the same version as in `rust-toolchain.toml`
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install Rust
         run: |