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/build.yml

@@ -31,7 +31,7 @@ jobs:
  rust: stable
  steps:
  - name: Checkout sources
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
  with:
  persist-credentials: false
 
@@ -76,7 +76,7 @@ jobs:
  runs-on: ubuntu-20.04
  steps:
  - name: Checkout sources
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
  with:
  persist-credentials: false
 
@@ -93,7 +93,7 @@ jobs:
  runs-on: ubuntu-20.04
  steps:
  - name: Checkout sources
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
  with:
  persist-credentials: false
 
@@ -110,7 +110,7 @@ jobs:
  runs-on: ubuntu-latest
  steps:
  - name: Checkout sources
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
  with:
  persist-credentials: false
  - name: Install rust toolchain
@@ -125,7 +125,7 @@ jobs:
  runs-on: ubuntu-latest
  steps:
  - name: Checkout sources
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
  with:
  persist-credentials: false
  - name: Install rust toolchain