update release notes

Author: razvan

modules/ROOT/pages/release-notes.adoc

@@ -12,6 +12,11 @@ Here are the headings you can use for the next release. Saves time checking inde
 
 === New platform features
 
+Operations::
+
+Users can now configure the lifetime of self signed certificates directly in the product's custom resources which influences the frequency of pod restarts.
+Details can be found at xref:operations/temporary_credentials lifetime.adoc[]
+
 === Platform improvements
 
 === Platform deprecations