chore(deps): bump actions/checkout from 5 to 6 (#178)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Cache Dependencies & Build Outputs
         uses: actions/cache@v5
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Rust Toolchain
         run: rustup target add thumbv6m-none-eabi
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Rust Toolchain
         run: rustup target add thumbv6m-none-eabi
@@ -76,7 +76,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Extract MSRV from Cargo.toml
         run: |
@@ -93,7 +93,7 @@ jobs:
       options: --security-opt seccomp=unconfined
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Generate Code Coverage
         run: cargo tarpaulin --all-features --out Xml