fix: increased Postgres version 13.7->13.16 (comment more)

Author: truszkowski

docs/product/administration/changelog.md

@@ -14,7 +14,7 @@ description: Find out about the latest changes to the Self-Hosted Spacelift.
 
 ### Internal
 
-- We've increased the default Postgres version from 13.7 to 13.16 because AWS has deprecated 13.7.
+- We've increased the default Postgres version from 13.7 to 13.16 because AWS has deprecated 13.7. This is a minor update that takes around 5 minutes and doesn't cause any outages.
 
 ## Changes between v2.3.0 and v2.4.0