UPSTREAM: <carry>: revert "Bump catalog versions to 4.19"

This reverts commit a98980b.

Author: tmshort

openshift/catalogd/kustomize/overlays/openshift/catalogs/openshift-certified-operators.yaml

@@ -8,4 +8,4 @@ spec:
     type: Image
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/certified-operator-index:v4.19
+      ref: registry.redhat.io/redhat/certified-operator-index:v4.18

openshift/catalogd/kustomize/overlays/openshift/catalogs/openshift-community-operators.yaml

@@ -8,4 +8,4 @@ spec:
     type: Image
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/community-operator-index:v4.19
+      ref: registry.redhat.io/redhat/community-operator-index:v4.18

openshift/catalogd/kustomize/overlays/openshift/catalogs/openshift-redhat-marketplace.yaml

@@ -8,4 +8,4 @@ spec:
     type: Image
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/redhat-marketplace-index:v4.19
+      ref: registry.redhat.io/redhat/redhat-marketplace-index:v4.18

openshift/catalogd/kustomize/overlays/openshift/catalogs/openshift-redhat-operators.yaml

@@ -8,4 +8,4 @@ spec:
     type: Image
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/redhat-operator-index:v4.19
+      ref: registry.redhat.io/redhat/redhat-operator-index:v4.18

openshift/catalogd/manifests/19-clustercatalog-openshift-certified-operators.yml

@@ -8,5 +8,5 @@ spec:
   source:
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/certified-operator-index:v4.19
+      ref: registry.redhat.io/redhat/certified-operator-index:v4.18
     type: Image

openshift/catalogd/manifests/20-clustercatalog-openshift-community-operators.yml

@@ -8,5 +8,5 @@ spec:
   source:
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/community-operator-index:v4.19
+      ref: registry.redhat.io/redhat/community-operator-index:v4.18
     type: Image

openshift/catalogd/manifests/21-clustercatalog-openshift-redhat-marketplace.yml

@@ -8,5 +8,5 @@ spec:
   source:
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/redhat-marketplace-index:v4.19
+      ref: registry.redhat.io/redhat/redhat-marketplace-index:v4.18
     type: Image

openshift/catalogd/manifests/22-clustercatalog-openshift-redhat-operators.yml

@@ -8,5 +8,5 @@ spec:
   source:
     image:
       pollIntervalMinutes: 10
-      ref: registry.redhat.io/redhat/redhat-operator-index:v4.19
+      ref: registry.redhat.io/redhat/redhat-operator-index:v4.18
     type: Image