chore: Bump nginx base container version (#1866)

In this commit:
  * Bump container image to 1.20
  * Follow 9.8 stream

Author: jonathanchristison

images/sbomer-ui/Containerfile

@@ -1,5 +1,5 @@
-# https://catalog.redhat.com/software/containers/ubi9/nginx-120/61a609f2bfd4a5234d596287
-FROM registry.access.redhat.com/ubi9/nginx-120@sha256:f4a47712867390a744119de36cdac8a4738977bb9473744a94a8c9302e597411
+# https://catalog.redhat.com/en/software/containers/ubi9/nginx-120/61a609f2bfd4a5234d596287
+FROM registry.access.redhat.com/ubi9/nginx-120:9.8
 
 COPY ui/dist/ .
 COPY images/sbomer-ui/run-with-env.sh /deployments/run-with-env.sh