feat(deps): update heimdall dependencies

| datasource | package               | from   | to     |
| ---------- | --------------------- | ------ | ------ |
| docker     | maticnetwork/heimdall | v0.3.0 | v1.0.3 |

Author: renovate-41e06b0f[bot]

charts/heimdall/values.yaml

@@ -41,7 +41,7 @@ heimdall:
     # -- Image for Heimdall
     repository: maticnetwork/heimdall
     pullPolicy: IfNotPresent
-    tag: "v0.3.0" # Don't forget to update appVersion in Chart.yaml
+    tag: "v1.0.3" # Don't forget to update appVersion in Chart.yaml
 
   # -- Options for Heimdall rest-server sidecar
   restServer: