improve logging of find-valid-pat script (#21789)

Author: Mykyta-Serbynevskyi

tools/bin/find_non_rate_limited_PAT

@@ -50,7 +50,7 @@ for personal_access_token in $@
 
 done
 
-echo -e "$red_text""::error NO more request availible! Yell at topher or someone on infra!""$default_text"
+echo -e "$red_text""::error Either PR changes are proposed by non-contributor who is prohibited to access repo secrets or NO more request available!""$default_text"
+echo -e "$red_text""::error Yell at Topher or someone on infra""$default_text"
 
 exit 1
-