chore(deps): Update github-actions (#411)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [helm/chart-releaser-action](https://togithub.com/helm/chart-releaser-action) | action | minor | `v1.5.0` -> `v1.6.0` |
| [helm/chart-testing-action](https://togithub.com/helm/chart-testing-action) | action | patch | `v2.6.0` -> `v2.6.1` |

---

### Release Notes

<details>
<summary>helm/chart-releaser-action (helm/chart-releaser-action)</summary>

### [`v1.6.0`](https://togithub.com/helm/chart-releaser-action/releases/tag/v1.6.0)

[Compare Source](https://togithub.com/helm/chart-releaser-action/compare/v1.5.0...v1.6.0)

#### What's Changed

-   Allow to mark the published github release as latest by [@&#8203;szaimen](https://togithub.com/szaimen) in [helm/chart-releaser-action#135
-   Support actions triggered by a tag by [@&#8203;luisico](https://togithub.com/luisico) in [helm/chart-releaser-action#96
-   Add flag `skip-existing` to skip upload if release exists by [@&#8203;xunleii](https://togithub.com/xunleii) in [helm/chart-releaser-action#134
-   bump to use chart-releaser v1.6.0 by [@&#8203;cpanato](https://togithub.com/cpanato) in [helm/chart-releaser-action#146
-   Remove `charts_repo_url` from readme by [@&#8203;viceice](https://togithub.com/viceice) in [helm/chart-releaser-action#144
-   Remove deprecated `charts_repo_url` option in documentation by [@&#8203;krapie](https://togithub.com/krapie) in [helm/chart-releaser-action#137
-   Add `changed_charts` and `chart_version` outputs by [@&#8203;n-oden](https://togithub.com/n-oden) in [helm/chart-releaser-action#130
-   Added: --packages-with-index parameter by [@&#8203;valeriano-manassero](https://togithub.com/valeriano-manassero) in [helm/chart-releaser-action#148
-   docs: add skip_existing to README by [@&#8203;lazyfrosch](https://togithub.com/lazyfrosch) in [helm/chart-releaser-action#158
-   README: Fix default chart-releaser version by [@&#8203;michalbiesek](https://togithub.com/michalbiesek) in [helm/chart-releaser-action#155
-   Extend `show_help` with `packages-with-index` by [@&#8203;michalbiesek](https://togithub.com/michalbiesek) in [helm/chart-releaser-action#160
-   Add `--pages-branch` parameter by [@&#8203;michalbiesek](https://togithub.com/michalbiesek) in [helm/chart-releaser-action#156
-   fix packages_with_index flag by [@&#8203;cpanato](https://togithub.com/cpanato) in [helm/chart-releaser-action#172
-   bump cr to 1.6.1 and add dependabot config by [@&#8203;cpanato](https://togithub.com/cpanato) in [helm/chart-releaser-action#173

#### New Contributors

-   [@&#8203;szaimen](https://togithub.com/szaimen) made their first contribution in [helm/chart-releaser-action#135
-   [@&#8203;luisico](https://togithub.com/luisico) made their first contribution in [helm/chart-releaser-action#96
-   [@&#8203;xunleii](https://togithub.com/xunleii) made their first contribution in [helm/chart-releaser-action#134
-   [@&#8203;viceice](https://togithub.com/viceice) made their first contribution in [helm/chart-releaser-action#144
-   [@&#8203;krapie](https://togithub.com/krapie) made their first contribution in [helm/chart-releaser-action#137
-   [@&#8203;n-oden](https://togithub.com/n-oden) made their first contribution in [helm/chart-releaser-action#130
-   [@&#8203;valeriano-manassero](https://togithub.com/valeriano-manassero) made their first contribution in [helm/chart-releaser-action#148
-   [@&#8203;lazyfrosch](https://togithub.com/lazyfrosch) made their first contribution in [helm/chart-releaser-action#158
-   [@&#8203;michalbiesek](https://togithub.com/michalbiesek) made their first contribution in [helm/chart-releaser-action#155
-   [@&#8203;dependabot](https://togithub.com/dependabot) made their first contribution in [helm/chart-releaser-action#174

**Full Changelog**: helm/chart-releaser-action@v1.5.0...v1.6.0

</details>

<details>
<summary>helm/chart-testing-action (helm/chart-testing-action)</summary>

### [`v2.6.1`](https://togithub.com/helm/chart-testing-action/releases/tag/v2.6.1)

[Compare Source](https://togithub.com/helm/chart-testing-action/compare/v2.6.0...v2.6.1)

#### What's Changed

-   bump ct to v3.10.1 by [@&#8203;cpanato](https://togithub.com/cpanato) in [helm/chart-testing-action#136

**Full Changelog**: helm/chart-testing-action@v2...v2.6.1

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://togithub.com/renovatebot/renovate/discussions) if that's undesired.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi4xMDkuNCIsInVwZGF0ZWRJblZlciI6IjM2LjEwOS40IiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

.github/workflows/lint_test.yml

@@ -26,7 +26,7 @@ jobs:
           python-version: 3.7
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.6.0
+        uses: helm/chart-testing-action@v2.6.1
 
       - name: Run chart-testing (lint)
         run: make lint

.github/workflows/release.yml

@@ -32,6 +32,6 @@ jobs:
           helm repo add grafana https://grafana.github.io/helm-charts
 
       - name: Run chart-releaser
-        uses: helm/chart-releaser-action@v1.5.0
+        uses: helm/chart-releaser-action@v1.6.0
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"