chore(karpor): bump app version to v0.5.9, chart version to 0.6.18 (#78)

This PR updates the Karpor Helm chart with the following changes:
- Bump the `appVersion` to `0.5.9`
- Bump the `version` to `0.6.18`

These updates ensure that the chart reflects the latest Karpor release.

**Note**: This PR was automatically generated by the
**karpor-chart-updater[bot]**.

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

charts/karpor/Chart.yaml

@@ -1,19 +1,15 @@
-# The fields explain in the Chart.yaml can refer:
-# https://helm.sh/docs/topics/charts/#the-chartyaml-file
 apiVersion: v2
 name: karpor
-# The Chart Version
-version: 0.6.17
+version: 0.6.18
 type: application
-# The Application Version in the Chart
-appVersion: 0.5.8
+appVersion: 0.5.9
 description: A modern kubernetes visualization tool (Karpor).
 home: https://github.com/KusionStack/karpor
 icon: https://kusionstack.io/karpor/assets/logo/logo.svg
 maintainers:
-- name: kusionstack
-  email: kusionstack@gmail.com
-  url: https://kusionstack.io/karpor
+  - name: kusionstack
+    email: kusionstack@gmail.com
+    url: https://kusionstack.io/karpor
 sources:
   - https://github.com/KusionStack/charts/tree/master/charts/karpor
   - https://github.com/KusionStack/karpor