Add support for logs directory in paperless-ai chart

This commit introduces a new volume mount for a logs directory in the
paperless-ai Helm chart. The deployment configuration is updated to
include a `logs-dir` volume that is mounted at `/app/logs`, allowing
for the collection and management of logs generated by the application.
Additionally, the version of the chart has been incremented to
`0.1.4-test1` to reflect this change.

The build workflow is also modified to trigger on pushes to the
`patch-paperless-ai` branch, ensuring that changes can be tested
separately from the main branch. These adjustments enhance
observability and facilitate better troubleshooting by storing logs
in a dedicated directory. No breaking changes are introduced.

charts/paperless-ai/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: paperless-ai
 description: Ein Helm Chart für Paperless AI, basierend auf der Docker Compose Konfiguration.
-version: 0.1.4
+version: 0.1.4-test1
 appVersion: 3.0.9
 keywords:
   - paperless-ai