DOCSP-38871 Add docs release notes for w/e April 26 (#3236)

## Pull Request Info

Jira ticket: https://jira.mongodb.org/browse/DOCSP-38871

Author: lindseymoore

docs-release-notes.md

@@ -1,3 +1,13 @@
+# April 26, 2024
+
+## Flutter SDK
+
+- Atlas App Services/Query Atlas GraphQL API: Remove set up information for using the Atlas GraphQL API.
+
+## React Native SDK
+
+- Debugging with Flipper: Remove page, its TOC entry, and associated redirects.
+
 # April 19, 2024
 
 ## Internal