Update paperless-ngx chart version and readiness checks

Improved the readiness and liveness probes for the paperless-ngx
chart by switching from exec commands to HTTP GET requests. This
change allows for more reliable checks that verify the application
is up and fully running based on the web server's response.

The readiness probe now checks the root path and will only return
success if the application is fully connected to the database and
Redis, improving traffic flow during startup.

In addition, the chart version was updated from 0.25.0 to 0.25.1
to reflect these changes. There are no breaking changes, but the
adjustments to the probes enhance the overall stability and
monitoring capabilities of the deployment.

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"