changed '>>' to '>' in order to avoid duplicated k8s resources in yam…

…ls (#3548)

Co-authored-by: tikr7 <tim.krause@alexanderthamm.com>

hack/control-plane.sh

@@ -23,10 +23,10 @@ readonly CONTROL_PLANE_SOURCE_CONFIG_DIR=control-plane/config/eventing-kafka-sou
 # Note: do not change this function name, it's used during releases.
 function control_plane_setup() {
   ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >>"${EVENTING_KAFKA_CONTROL_PLANE_ARTIFACT}" || return $?
-  ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_POST_INSTALL_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >>"${EVENTING_KAFKA_POST_INSTALL_ARTIFACT}" || return $?
+  ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_POST_INSTALL_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >"${EVENTING_KAFKA_POST_INSTALL_ARTIFACT}" || return $?
 }
 
 function control_plane_source_setup() {
-  ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_POST_INSTALL_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >>"${EVENTING_KAFKA_POST_INSTALL_ARTIFACT}" || return $?
+  ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_POST_INSTALL_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >"${EVENTING_KAFKA_POST_INSTALL_ARTIFACT}" || return $?
   ko resolve ${KO_FLAGS} -Rf "${CONTROL_PLANE_SOURCE_CONFIG_DIR}" | "${LABEL_YAML_CMD[@]}" >>"${EVENTING_KAFKA_SOURCE_BUNDLE_ARTIFACT}" || return $?
 }