chore(dev): upgrade APISIX to 3.8.0 (#700)

diff --git a/charts/apisix/Chart.yaml b/charts/apisix/Chart.yaml
index cd73d82..e40a01b 100644
--- a/charts/apisix/Chart.yaml
+++ b/charts/apisix/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: 2.5.0
+version: 2.6.0
 
 # 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: 3.7.0
+appVersion: 3.8.0
 sources:
   - https://github.com/apache/apisix-helm-chart
 
diff --git a/charts/apisix/README.md b/charts/apisix/README.md
index 36482ae..f39508d 100644
--- a/charts/apisix/README.md
+++ b/charts/apisix/README.md
@@ -167,7 +167,7 @@
 | hostNetwork | bool | `false` |  |
 | image.pullPolicy | string | `"IfNotPresent"` | Apache APISIX image pull policy |
 | image.repository | string | `"apache/apisix"` | Apache APISIX image repository |
-| image.tag | string | `"3.7.0-debian"` | Apache APISIX image tag Overrides the image tag whose default is the chart appVersion. |
+| image.tag | string | `"3.8.0-debian"` | Apache APISIX image tag Overrides the image tag whose default is the chart appVersion. |
 | ingress | object | `{"annotations":{},"enabled":false,"hosts":[{"host":"apisix.local","paths":[]}],"servicePort":null,"tls":[]}` | Using ingress access Apache APISIX service |
 | ingress-controller | object | `{"config":{"apisix":{"adminAPIVersion":"v3"}},"enabled":false}` | Ingress controller configuration |
 | ingress.annotations | object | `{}` | Ingress annotations |
diff --git a/charts/apisix/values.yaml b/charts/apisix/values.yaml
index 4debf80..6c7cd9c 100644
--- a/charts/apisix/values.yaml
+++ b/charts/apisix/values.yaml
@@ -29,7 +29,7 @@
   pullPolicy: IfNotPresent
   # -- Apache APISIX image tag
   # Overrides the image tag whose default is the chart appVersion.
-  tag: 3.7.0-debian
+  tag: 3.8.0-debian
 
 # -- set false to use `Deployment`, set true to use `DaemonSet`
 useDaemonSet: false