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

@@ -22,7 +22,7 @@ jobs:
     name: Check Clippy and rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
@@ -38,7 +38,7 @@ jobs:
     env:
       RUSTDOCFLAGS: "-Dwarnings --cfg docsrs -Zunstable-options --generate-link-to-definition"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -80,7 +80,7 @@ jobs:
             variant: minimal_versions
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Not MSRV
         if: ${{ matrix.variant != 'MSRV' }}
         run: cargo generate-lockfile --ignore-rust-version
@@ -110,7 +110,7 @@ jobs:
             toolchain: stable
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -131,7 +131,7 @@ jobs:
   test-miri:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         run: |
           rustup toolchain install nightly --component miri
@@ -146,7 +146,7 @@ jobs:
   test-no-std:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly
         with:
@@ -157,7 +157,7 @@ jobs:
   test-ios:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly
         with: