chore(chart): bump version to 0.7.0 and appVersion to 3.0.7

Updates the Paperless-AI Helm chart version from 0.1.0 to 0.7.0 and the
 application version from 2.1.3 to 3.0.7. This significant version jump
 reflects major improvements in the underlying application including new
 features and stability improvements. This update ensures the chart
 references the latest stable release of Paperless-AI.

charts/paperless-ai/Chart.yaml

@@ -22,5 +22,5 @@ sources:
   - https://github.com/clusterzx/paperless-ai
   - https://github.com/paperless-ngx/paperless-ngx
   - https://github.com/ChiliChonka/paperless-ngx-helm-chart
-version: 0.1.0
-appVersion: "2.1.3"
+version: 0.7.0
+appVersion: "3.0.7"