Update Chart.yaml

To use latest release, 1.8.1

Author: Goobaroo

deploy/helm-chart/github-actions-exporter/Chart.yaml

@@ -11,4 +11,4 @@ version: 0.1.4
 # 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: 1.8.0
+appVersion: 1.8.1