build(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/audit.yml

@@ -28,7 +28,7 @@ jobs:
       issues: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: actions-rust-lang/audit@v1

.github/workflows/code_coverage.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Install lcov tools

.github/workflows/cont_integration.yml

@@ -25,7 +25,7 @@ jobs:
           - --all-features
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       # The 'toolchain' argument on this action overrides the Rust compiler version set in rust-toolchain.toml
@@ -55,7 +55,7 @@ jobs:
           - --all-features
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       # This action will honor the Rust compiler version set in rust-toolchain.toml. We aim to keep it in sync with
@@ -74,7 +74,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       # This action automatically reads and applies rust-toolchain.toml
@@ -94,7 +94,7 @@ jobs:
       CFLAGS: -I/usr/include
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
         # Install a recent version of clang that supports wasm32
@@ -117,7 +117,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       # This action automatically reads and applies rust-toolchain.toml
@@ -135,7 +135,7 @@ jobs:
       checks: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       # This action automatically reads and applies rust-toolchain.toml

.github/workflows/zizmor.yml

@@ -18,7 +18,7 @@ jobs:
       security-events: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false