chore(deps): update registry.redhat.io/openshift4/ose-etcd-rhel9:v4.20 docker digest to a3edbdb (#15851)

Signed-off-by: konflux-internal-p02 <170854209+konflux-internal-p02[bot]@users.noreply.github.com>
Co-authored-by: konflux-internal-p02[bot] <170854209+konflux-internal-p02[bot]@users.noreply.github.com>

Author: konflux-internal-p02[bot]

bundle/additional-images-patch.yaml

@@ -21,7 +21,7 @@ additionalImages:
   # - name: RELATED_IMAGE_OSE_KUBE_RBAC_PROXY_IMAGE
   #   value: "registry.redhat.io/openshift4/ose-kube-rbac-proxy-rhel9:v4.20@sha256:890bcb4e15a58b5fb9ee5641042ea42e78505f18f95d019e6d6582994151027e"
   - name: RELATED_IMAGE_OSE_ETCD_IMAGE
-    value: "registry.redhat.io/openshift4/ose-etcd-rhel9:v4.20@sha256:6207d9d668589cda1dc06dda0152577d29592871f0eb9c824e7739a1d395f7c8"
+    value: "registry.redhat.io/openshift4/ose-etcd-rhel9:v4.20@sha256:a3edbdb7aa911f77a1c4fcb94ca7f966ccb1a025af7dc07240b87fd8cf618493"
   - name: RELATED_IMAGE_OSE_CLI_IMAGE
     value: "registry.redhat.io/openshift4/ose-cli-rhel9:v4.20@sha256:ec38425caa96c78c860a97b28332aa2b7f0d86dce3cc4cfc7a2060c265c55c27"
   - name: RELATED_IMAGE_POSTGRESQL_16_IMAGE