FE: Latest version is null
![image](https://github.com/provectus/kafka-ui/assets/1494347/9e9d7e84-8bf8-4093-bf60-8f0357de7d53)

2. Replace "Current latest" with "latest"
1. Display "Latest version is UNKNOWN" in case of nulls
kafka-ui-react-app/src/components/Version/Version.tsx
kafka-ui-react-app/src/components/Version/Version.tsx
diff --git a/kafka-ui-react-app/src/components/Version/Version.tsx b/kafka-ui-react-app/src/components/Version/Version.tsx
index 6788605d92b..3fc1f05774f 100644
--- a/kafka-ui-react-app/src/components/Version/Version.tsx
+++ b/kafka-ui-react-app/src/components/Version/Version.tsx
@@ -15,7 +15,9 @@ const Version: React.FC = () => {
     <S.Wrapper>
       {!isLatestRelease && (
         <S.OutdatedWarning
-          title={`Your app version is outdated. Current latest version is ${versionTag}`}
+          title={`Your app version is outdated. Latest version is ${
+            versionTag || 'UNKNOWN'
+          }`}
         >
           <WarningIcon />
         </S.OutdatedWarning>
