chore(deps): update actions/checkout action to v7 (#64)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://github.com/actions/checkout) | action | major | `v6.0.3` → `v7.0.0` |

---

### Release Notes

<details>
<summary>actions/checkout (actions/checkout)</summary>

### [`v7.0.0`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v700)

[Compare Source](https://github.com/actions/checkout/compare/v7.0.0...v7.0.0)

- Block checking out fork PR for pull\_request\_target and workflow\_run by [@&#8203;aiqiaoy](https://github.com/aiqiaoy) in [#&#8203;2454](https://github.com/actions/checkout/pull/2454)
- Bump actions/publish-immutable-action from 0.0.3 to 0.0.4 in the minor-actions-dependencies group across 1 directory by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2458](https://github.com/actions/checkout/pull/2458)
- Bump flatted from 3.3.1 to 3.4.2 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2460](https://github.com/actions/checkout/pull/2460)
- Bump js-yaml from 4.1.0 to 4.2.0 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2461](https://github.com/actions/checkout/pull/2461)
- Bump [@&#8203;actions/core](https://github.com/actions/core) and [@&#8203;actions/tool-cache](https://github.com/actions/tool-cache) and Remove uuid by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2459](https://github.com/actions/checkout/pull/2459)
- upgrade module to esm and update dependencies by [@&#8203;aiqiaoy](https://github.com/aiqiaoy) in [#&#8203;2463](https://github.com/actions/checkout/pull/2463)
- Bump the minor-npm-dependencies group across 1 directory with 3 updates by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2462](https://github.com/actions/checkout/pull/2462)

### [`v7`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v700)

[Compare Source](https://github.com/actions/checkout/compare/v6.0.3...v7.0.0)

- Block checking out fork PR for pull\_request\_target and workflow\_run by [@&#8203;aiqiaoy](https://github.com/aiqiaoy) in [#&#8203;2454](https://github.com/actions/checkout/pull/2454)
- Bump actions/publish-immutable-action from 0.0.3 to 0.0.4 in the minor-actions-dependencies group across 1 directory by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2458](https://github.com/actions/checkout/pull/2458)
- Bump flatted from 3.3.1 to 3.4.2 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2460](https://github.com/actions/checkout/pull/2460)
- Bump js-yaml from 4.1.0 to 4.2.0 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2461](https://github.com/actions/checkout/pull/2461)
- Bump [@&#8203;actions/core](https://github.com/actions/core) and [@&#8203;actions/tool-cache](https://github.com/actions/tool-cache) and Remove uuid by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2459](https://github.com/actions/checkout/pull/2459)
- upgrade module to esm and update dependencies by [@&#8203;aiqiaoy](https://github.com/aiqiaoy) in [#&#8203;2463](https://github.com/actions/checkout/pull/2463)
- Bump the minor-npm-dependencies group across 1 directory with 3 updates by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2462](https://github.com/actions/checkout/pull/2462)

</details>

---

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---

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---

This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4yMzMuNCIsInVwZGF0ZWRJblZlciI6IjQzLjIzMy40IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJhY3Rpb24iLCJhdXRvbWVyZ2UiLCJkZXBzIl19-->

Reviewed-on: #64
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Co-committed-by: Renovate Bot <renovate@t00n.de>

.gitea/workflows/validate.yaml

@@ -36,7 +36,7 @@ jobs:
       has_helmfile: ${{ steps.check-helmfile.outputs.exists }}
       has_k8s: ${{ steps.check-k8s.outputs.exists }}
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Check if helmfile.yaml exists
         id: check-helmfile
         run: |
@@ -63,7 +63,7 @@ jobs:
     needs: detect-service-type
     if: needs.detect-service-type.outputs.has_k8s == 'true'
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - uses: https://gitea.t000-n.de/t.behrendt/k_deploy_actions/.gitea/actions/extract-namespace-from-repo-name@244a64884838c35a5fc0dc42e0b82bb70b253dfc # 0.0.1
         id: namespace
         with:
@@ -88,7 +88,7 @@ jobs:
       needs.detect-service-type.outputs.has_k8s == 'true' && 
       inputs.skip_helm_validation != 'true'
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - uses: https://gitea.t000-n.de/t.behrendt/k_deploy_actions/.gitea/actions/extract-namespace-from-repo-name@244a64884838c35a5fc0dc42e0b82bb70b253dfc # 0.0.1
         id: namespace
         with: