Fix pipeline path error with conduit in versions v0.13.5+ (#83)

In earlier versions of conduit (<= 0.13.4) it was allowed for a pipeline file
to be passed instead of a dir. Currently, in versions (>= 0.13.5) this needs
to be a directory.

Update default conduit to v0.13.6

Author: Lyubo Kamenov

api/v1alpha/conduit_types.go

@@ -42,7 +42,7 @@ var ConduitConditions = NewConditionSet(
 )
 
 const (
-	ConduitVersion             = "v0.13.4"
+	ConduitVersion             = "v0.13.6"
 	ConduitImage               = "ghcr.io/conduitio/conduit"
 	ConduitContainerName       = "conduit-server"
 	ConduitPipelinePath        = "/conduit.pipelines"