Adds fips note to docs (#1147)

Co-authored-by: Steven Smith <stevsmit@stevsmit-thinkpadt14gen4.remote.csb>

modules/rn_3_13_0.adoc

@@ -166,6 +166,11 @@ For {productname-ocp} deployments, this update is automatically handled by the O
 
 The following sections note known issues and limitations for {productname} {producty}.
 
+[id="upgrading-known-issues"]
+=== Upgrading known issue
+
+If FIPS mode is enabled for your {ocp} cluster and you use Clair, you must not upgrade the {productname} Operator to version {producty} If you upgrade, Clair will not function in your cluster. (link:https://issues.redhat.com/browse/PROJQUAY-8185[*PROJQUAY-8185*])
+
 [id="registry-auto-pruning-known-issue"]
 === Registry auto-pruning known issues