feat: upgrade apisix dashboard to 3.0.0 (#470)

diff --git a/charts/apisix-dashboard/Chart.yaml b/charts/apisix-dashboard/Chart.yaml
index 1596a5e..15c6e50 100644
--- a/charts/apisix-dashboard/Chart.yaml
+++ b/charts/apisix-dashboard/Chart.yaml
@@ -31,12 +31,12 @@
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.7.0
+version: 0.8.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
-appVersion: 2.15.0
+appVersion: 3.0.0
 
 maintainers:
   - name: tao12345666333
diff --git a/charts/apisix-dashboard/README.md b/charts/apisix-dashboard/README.md
index 4c93a13..08ba8bb 100644
--- a/charts/apisix-dashboard/README.md
+++ b/charts/apisix-dashboard/README.md
@@ -73,7 +73,7 @@
 | fullnameOverride | string | `""` | String to fully override apisix-dashboard.fullname template |
 | image.pullPolicy | string | `"IfNotPresent"` | Apache APISIX Dashboard image pull policy |
 | image.repository | string | `"apache/apisix-dashboard"` | Apache APISIX Dashboard image repository |
-| image.tag | string | `"2.15.0-alpine"` |  |
+| image.tag | string | `"3.0.0-alpine"` |  |
 | imagePullSecrets | list | `[]` | Docker registry secret names as an array |
 | ingress.annotations | object | `{}` | Ingress annotations |
 | ingress.className | string | `""` | Kubernetes 1.18+ support ingressClassName attribute |
diff --git a/charts/apisix-dashboard/values.yaml b/charts/apisix-dashboard/values.yaml
index 1d8e466..9593033 100644
--- a/charts/apisix-dashboard/values.yaml
+++ b/charts/apisix-dashboard/values.yaml
@@ -28,7 +28,7 @@
   pullPolicy: IfNotPresent
   # Overrides the image tag whose default is the chart appVersion.
   # Apache APISIX Dashboard image tag (immutable tags are recommended)
-  tag: 2.15.0-alpine
+  tag: 3.0.0-alpine
 
 # -- Docker registry secret names as an array
 imagePullSecrets: []