helm: Fix selector labels for the operator deployment

Use tetragon-operator.selectorLabels instead of tetragon-operator.labels
for selector labels. tetragon-operator.labels contains the helm.sh/chart
label which differs among different versions (e.g. tetragon-1.0.0-rc.1).
Helm upgrade fails because spec.selector field is immutable.

Signed-off-by: Michi Mutsuzaki <michi@isovalent.com>

install/kubernetes/templates/operator_deployment.yaml

@@ -8,7 +8,7 @@ metadata:
 spec:
   selector:
     matchLabels:
-      {{- include "tetragon-operator.labels" . | nindent 6 }}
+      {{- include "tetragon-operator.selectorLabels" . | nindent 6 }}
   replicas: 1
   template:
     metadata: