chore: release 0.8.4 (#249)

Signed-off-by: Matheus Pimenta <matheuscscp@gmail.com>

helm/gke-metadata-server/Chart.yaml

@@ -30,10 +30,10 @@ 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: 0.8.3
+version: 0.8.4
 
 # 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.
 # It is recommended to use it with quotes.
-appVersion: "0.8.3"
+appVersion: "0.8.4"