Update gitea/gitea Docker tag to v1.19.3 (#178)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [gitea/gitea](https://github.com/go-gitea/gitea) | patch | `1.19.2-rootless` -> `1.19.3-rootless` |

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### Release Notes

<details>
<summary>go-gitea/gitea</summary>

### [`v1.19.3`](https://github.com/go-gitea/gitea/blob/HEAD/CHANGELOG.md#&#8203;1193-httpsgithubcomgo-giteagiteareleasestag1193---2023-05-03)

[Compare Source](go-gitea/gitea@v1.19.2...v1.19.3)

-   SECURITY
    -   Use golang 1.20.4 to fix CVE-2023-24539, CVE-2023-24540, and CVE-2023-29400
-   ENHANCEMENTS
    -   Enable whitespace rendering on selection in Monaco ([#&#8203;24444](go-gitea/gitea#24444)) ([#&#8203;24485](go-gitea/gitea#24485))
    -   Improve milestone filter on issues page ([#&#8203;22423](go-gitea/gitea#22423)) ([#&#8203;24440](go-gitea/gitea#24440))
-   BUGFIXES
    -   Fix api error message if fork exists ([#&#8203;24487](go-gitea/gitea#24487)) ([#&#8203;24493](go-gitea/gitea#24493))
    -   Fix user-cards format ([#&#8203;24428](go-gitea/gitea#24428)) ([#&#8203;24431](go-gitea/gitea#24431))
    -   Fix incorrect CurrentUser check for docker rootless ([#&#8203;24435](go-gitea/gitea#24435))
    -   Getting the tag list does not require being signed in ([#&#8203;24413](go-gitea/gitea#24413)) ([#&#8203;24416](go-gitea/gitea#24416))

</details>

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Co-authored-by: Michael Wittig <[email protected]>
Reviewed-on: https://gitea.sh4ke.rocks/sh4ke/k8s-projects/pulls/178

Author: Michael Wittig

gitea/qa/values.yaml

@@ -102,4 +102,4 @@ backup:
       operator: In
       values:
         - gitea-0
-  image: gitea/gitea:1.19.2-rootless
+  image: gitea/gitea:1.19.3-rootless