Update release notes for 7.5.1

Author: sdwheeler

reference/docs-conceptual/whats-new/What-s-New-in-PowerShell-75.md

@@ -1,13 +1,13 @@
 ---
 title: What's New in PowerShell 7.5
 description: New features and changes released in PowerShell 7.5
-ms.date: 01/29/2025
+ms.date: 04/25/2025
 ---
 
 # What's New in PowerShell 7.5
 
-PowerShell 7.5.0 includes the following features, updates, and breaking changes. PowerShell
-7.5 is built on .NET 9.0.1 GA release.
+PowerShell 7.5.1 includes the following features, updates, and breaking changes. PowerShell
+7.5 is built on .NET 9.0.203 release.
 
 For a complete list of changes, see the [CHANGELOG][chg] in the GitHub repository. For more
 information about .NET 9, see [What's new in .NET 9][07].
@@ -118,6 +118,7 @@ Many thanks to **@ArmaanMcleod** and others for all their work to improve tab co
 
 ## Engine improvements
 
+- Fallback to AppLocker after `WldpCanExecuteFile` ([#25305][25305])
 - Explicitly start and stop ANSI Error Color ([#24065][24065]) (Thanks @JustinGrote!)
 - Improve .NET overload definition of generic methods ([#21326][21326]) (Thanks @jborean93!)
 - Optimize the `+=` operation for a collection when it's an object array ([#23901][23901]) (Thanks
@@ -334,3 +335,4 @@ CollectionSize Test                TotalMilliseconds RelativeSpeed
 [24228]: https://github.com/PowerShell/PowerShell/pull/24228
 [24236]: https://github.com/PowerShell/PowerShell/pull/24236
 [24749]: https://github.com/PowerShell/PowerShell/issues/24749
+[25305]: https://github.com/PowerShell/PowerShell/pull/25305