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/test.yml

@@ -11,7 +11,7 @@ jobs:
     name: Nightly, format and Doc
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly
       - name: Build docs
@@ -26,7 +26,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@beta
       - name: Test impl-tools-lib
@@ -39,7 +39,7 @@ jobs:
     runs-on: windows-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Test impl-tools-lib
@@ -52,7 +52,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@1.66.0
       - name: Use Cargo.lock.msrv
@@ -65,7 +65,7 @@ jobs:
   workspace:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable