chore(deps): update gitroomhq/postiz-app to v2.13.0 (#3577)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/gitroomhq/postiz-app | minor | `v2.12.1` → `v2.13.0` |
| [gitroomhq/postiz-app](https://github.com/gitroomhq/postiz-app) | minor | `v2.12.1` → `v2.13.0` |

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### Release Notes

<details>
<summary>gitroomhq/postiz-app (gitroomhq/postiz-app)</summary>

### [`v2.13.0`](https://github.com/gitroomhq/postiz-app/releases/tag/v2.13.0): Shipping Tons of stuff

[Compare Source](https://github.com/gitroomhq/postiz-app/compare/v2.12.1...v2.13.0)

Shipping, shipping, shipping!

- Added streak - just some fomo so you will never stop creating posts.
- Added settings to global mode - requests by many people
- Upload as many files as you want in one batch instead of 5 before
- Remove editing of social media once you select them from the switcher.
- Added single post analytics for many platforms.
- Added an option to delete tags.
- Scheduling edge cases solved - for example: what happens if you click "update" on a published post? You will see a pop-up now.
- Added two more chat platforms: Twitch and Kick
- Short linking can be changed to: always ask, never, always from the settings.
- Maximize pictures in the media library.
- For meta apps, there is a new workflow to refresh the token before it expires.
- Time slots improvements in design
- Postiz agent fixes

**Full Changelog**: <https://github.com/gitroomhq/postiz-app/compare/v2.12.1...v2.13.0>

</details>

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---

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---

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Reviewed-on: #3577
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/postiz/Chart.yaml

@@ -41,4 +41,4 @@ dependencies:
     repository: oci://harbor.alexlebens.net/helm-charts
 icon: https://cdn.jsdelivr.net/gh/selfhst/icons/png/postiz.png
 # renovate: datasource=github-releases depName=gitroomhq/postiz-app
-appVersion: v2.12.1
+appVersion: v2.13.0

clusters/cl01tl/helm/postiz/values.yaml

@@ -9,7 +9,7 @@ postiz:
         main:
           image:
             repository: ghcr.io/gitroomhq/postiz-app
-            tag: v2.12.1
+            tag: v2.13.0
             pullPolicy: IfNotPresent
           env:
             - name: MAIN_URL