[kots]: change to not install via Helm

A [regression by Replicated](https://github.com/replicated-collab/replicated-gitpod/issues/27)
introduced a breaking change to how to deploy KOTS releases that included
a Helm chart between v1.72.0 and v1.72.2. The [change](replicatedhq/kots@77690e5)
only affects manifests that use native Helm but the legacy implementation
inside KOTS.

Author: Simon Emms

install/kots/manifests/gitpod-log-collector.yaml

@@ -10,7 +10,7 @@ spec:
     name: fluent-bit
     chartVersion: 0.20.2
   helmVersion: v3
-  useHelmInstall: true
+  useHelmInstall: false
   weight: 10
   values:
     fluent-bit: