build(deps): bump actions/checkout from 5 to 6 (#281)

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/ci_cargo.yml

@@ -66,7 +66,7 @@ jobs:
       - name: Setup | ldproxy (cargo)
         if: steps.ldproxy-binary.outcome != 'success'
         run: cargo install ldproxy
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           path: /home/runner/work/esp-idf-template/esp-idf-template/github-esp-idf-template
       - name: Generate
@@ -98,7 +98,7 @@ jobs:
         if: steps.binaries.outcome != 'success'
         run: cargo install cargo-generate
       - uses: Swatinem/rust-cache@v2
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           path: /home/runner/work/esp-idf-template/esp-idf-template/github-esp-idf-template
       - name: Generate

.github/workflows/ci_cmake.yml

@@ -80,7 +80,7 @@ jobs:
       - name: Setup | ldproxy (cargo)
         if: steps.ldproxy-binary.outcome != 'success'
         run: cargo install ldproxy
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           path: /home/runner/work/esp-idf-template/esp-idf-template/github-esp-idf-template
       - name: Generate