chore: dump 2.2.1-rc.4 version

Signed-off-by: Rory Z <[email protected]>

RELEASE.md

@@ -1,6 +1,6 @@
 # Release Note 🍻
 
-EMQX Operator 2.2.1-rc.3 is released.
+EMQX Operator 2.2.1-rc.4 is released.
 
 ## Supported version
 + apps.emqx.io/v2beta1
@@ -19,6 +19,8 @@ EMQX Operator 2.2.1-rc.3 is released.
 
   + The window period when the service is unavailable during blue-green deployment has been canceled. Now, even during the blue-green release process, the EMQX service remains available.
 
+  + Delete mutating webhook and validating webhook.
+
 ## Fixes 🛠
 
 + `apps.emqx.io/v2beta1 EMQX`.
@@ -31,6 +33,8 @@ EMQX Operator 2.2.1-rc.3 is released.
 
   + Fix the issue where EMQX customer resource status is still `Ready` when deleting a Pod.
 
+  + Fix the issue where the Pod cannot be ready when the EMQX custom resource has the labelsync_pods_suite_test.go:230s from third-party settings.
+
 ## How to install/upgrade EMQX Operator 💡
 
 > Need make sure the [cert-manager](https://cert-manager.io/) is ready
@@ -41,7 +45,7 @@ helm repo update
 helm upgrade --install emqx-operator emqx/emqx-operator \
   --namespace emqx-operator-system \
   --create-namespace \
-  --version 2.2.1-rc.3
+  --version 2.2.1-rc.4
 kubectl wait --for=condition=Ready pods -l "control-plane=controller-manager" -n emqx-operator-system
 ```
 

deploy/charts/emqx-operator/Chart.yaml

@@ -15,9 +15,9 @@ type: application
 # 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: 2.2.1-rc.3
+version: 2.2.1-rc.4
 
 # 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: 2.2.1-rc.3
+appVersion: 2.2.1-rc.4