Resolve "Enable Istio Auth Policies for Testing"

General MR

Summary

Remove istio.enabled from test-values

Relevant logs/screenshots

n/a

Linked Issue

#81 (closed)

Upgrade Notices

n/a

Relates to #81 (closed)

chart/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.3
-version: 5.41.4-bb.3
+version: 5.41.4-bb.4
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki