add remaining open pr changelog entry

Author: emilyrohrbough

content/_changelogs/9.6.1.md

@@ -6,6 +6,9 @@ _Released 5/9/2022_
 
 - Cypress can now launch on systems where Firefox is installed via Snapcraft.
   Fixed [#19793](https://github.com/cypress-io/cypress/issues/19793).
+- Updates were made to ensure XHR calls are properly displaying the response
+  body in the command log. Fixed
+  [#21361](https://github.com/cypress-io/cypress/issues/21361).
 - Fixed [`cy.contains()`](/api/commands/contains) and
   [`.should('contain', ...)`](/api/commands/should) to handle finding text that
   contains backslash characters. Fixed