docs: v13 changelog summary (#5441)

* changelog summary

* Update docs/guides/references/changelog.mdx

Co-authored-by: Jennifer Shehane <jennifer@cypress.io>

* tweak verbaige & lint

---------

Co-authored-by: Jennifer Shehane <jennifer@cypress.io>

docs/guides/references/changelog.mdx

@@ -6,6 +6,15 @@ title: Changelog
 
 _Released 08/29/2023_
 
+**Summary:**
+
+Test data collection for debugging in Cypress Cloud using [Test Replay](/guides/cloud/debugging/test-replay) is enabled by default, with an opt-out available in Cloud [project settings](/guides/cloud/debugging/test-replay#Opt-out-of-Test-Replay).
+
+Test Replay now serves as the primary replacement for debugging via video. Video capture and `videoCompression` of captured video are now set to `false` by default and `videoUploadOnPasses` is removed.
+
+Read more about v13.0.0 in
+[our blog post](https://on.cypress.io/cypress-13-release).
+
 **Breaking Changes:**
 
 - The [`cy.readFile()`](/api/commands/readfile) command is now retry-able as a [query command](/guides/core-concepts/retry-ability). This should not affect any tests using it; the functionality is unchanged. However, it can no longer be overwritten using [`Cypress.Commands.overwrite()`](/api/cypress-api/custom-commands#Overwrite-Existing-Commands). Addressed in [#25595](https://github.com/cypress-io/cypress/pull/25595).