Add last migration example

blog/2024-04-30-nushell_0_93_0.md

@@ -132,6 +132,11 @@ See a full overview of the [breaking changes](#breaking-changes-toc)
 
 To be consistent with `first` and other commands, `last` now errors if the input is empty ([#12478](https://github.com/nushell/nushell/pull/12478)).
 
+To suppress the error and return null if an input is empty, wrap `last` in a `try` block:
+```nushell
+[] | try { last }
+```
+
 #### `drop` [[toc](#table-of-content)]
 
 ::: warning Breaking change