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/ci.yml

@@ -19,7 +19,7 @@ jobs:
                 rust: ["nightly-2024-01-26"]
                 flags: [""]
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: dtolnay/rust-toolchain@master
               with:
                   toolchain: ${{ matrix.rust }}
@@ -35,7 +35,7 @@ jobs:
         runs-on: ubuntu-latest
         timeout-minutes: 30
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: dtolnay/rust-toolchain@clippy
             - uses: Swatinem/rust-cache@v2
               with:
@@ -48,7 +48,7 @@ jobs:
         runs-on: ubuntu-latest
         timeout-minutes: 30
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: dtolnay/rust-toolchain@nightly
             - uses: Swatinem/rust-cache@v2
               with:
@@ -61,7 +61,7 @@ jobs:
         runs-on: ubuntu-latest
         timeout-minutes: 30
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: dtolnay/rust-toolchain@nightly
               with:
                   components: rustfmt

.github/workflows/e2e.yml

@@ -18,7 +18,7 @@ jobs:
   e2e-tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         name: Check out repository code
 
       - name: Log in to Registry