chore: bump apisix-dashboard to 2.8 (#142)

diff --git a/charts/apisix-dashboard/Chart.yaml b/charts/apisix-dashboard/Chart.yaml
index e666645..6ba106c 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: 0.1.5
+version: 0.2.0
 
 # 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: 2.7.0
+appVersion: 2.8.0
 
 maintainers:
   - name: tao12345666333
diff --git a/charts/apisix-dashboard/values.yaml b/charts/apisix-dashboard/values.yaml
index 9175e35..94c60a3 100644
--- a/charts/apisix-dashboard/values.yaml
+++ b/charts/apisix-dashboard/values.yaml
@@ -24,7 +24,7 @@
   repository: apache/apisix-dashboard
   pullPolicy: IfNotPresent
   # Overrides the image tag whose default is the chart appVersion.
-  tag: "2.7"
+  tag: "2.8"
 
 imagePullSecrets: []
 nameOverride: ""