Update paperless-ngx version to 0.25.1 and dependencies

The version of the paperless-ngx chart has been incremented from 0.25.0
to 0.25.1 to reflect updates. The appVersion remains at 2.20.0, but
the Kubernetes version requirement has been updated from `>=1.22.0-0`
to `>=1.28.0-0`.

Additionally, the dependencies for the chart have been updated to
reflect newer versions:
- common: 4.4.0
- mariadb: 23.2.4
- postgresql: 18.1.11
- redis: 24.0.0

The installation instructions have also been updated to use a new
repository, changing the command from `gabe565` to `cooltux`.

These changes ensure compatibility with more recent Kubernetes versions
and dependencies, improving overall stability and performance of the
chart.

charts/paperless-ngx/Chart.yaml

@@ -4,7 +4,7 @@ description: "A community-supported supercharged version of paperless: scan, ind
 home: https://charts.gabe565.com/charts/paperless-ngx/
 icon: https://raw.githubusercontent.com/paperless-ngx/paperless-ngx/b948750/src-ui/src/assets/logo-notext.svg
 type: application
-version: 0.25.0
+version: 0.25.1
 # renovate datasource=docker depName=ghcr.io/paperless-ngx/paperless-ngx
 appVersion: 2.20.0
 kubeVersion: ">=1.28.0-0"