Update NuGet 7.6 release notes with CRL/OCSP URL output in dotnet nuget verify

Agent-Logs-Url: https://github.com/NuGet/docs.microsoft.com-nuget/sessions/36ea865d-861f-4801-9e45-3a55f200a738

Co-authored-by: jeffkl <[email protected]>

Author: Copilot

docs/release-notes/NuGet-7.6.md

@@ -22,6 +22,10 @@ NuGet distribution vehicles:
 |:---|:---|:---|
 | [**7.6**](https://nuget.org/downloads) | TBD | TBD |
 
+## Summary: What's New in 7.6
+
+* `dotnet nuget verify` now outputs CRL and OCSP URLs for certificates at normal and higher verbosity - [#7181](https://github.com/NuGet/NuGet.Client/pull/7181)
+
 ## Not yet released
 
 This version of NuGet is in preview and these release notes will be updated when it is released.