Vendor Portal v2025.09.23-4 release notes

Author: replicated-ci

docs/release-notes/rn-vendor-platform.md

@@ -10,6 +10,13 @@ This topic contains release notes for the Replicated Vendor Platform, which incl
 
 <!--RELEASE_NOTES_PLACEHOLDER-->
 
+## v2025.09.23-4
+
+Released on September 23, 2025
+
+### New Features {#new-features-v2025-09-23-4}
+* Users can now select a custom value of Compatibility Matrix credits to purchase in the Buy credits drop down within the Compatibility Matrix page.
+
 ## v2025.09.09-0
 
 Released on September 9, 2025