Merged PR 32131: Updated changelog for v7.2.23 (#24196)

Updated changelog for v7.2.23

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#### AI description  (iteration 1)
#### PR Classification
Documentation update.

#### PR Summary
Updated the changelog for version 7.2.23 with build and packaging improvements, and documentation updates.
- `CHANGELOG/7.2.md`: Added details for version 7.2.23, including .NET bump to 6.0.425, feature flags for network isolation, and various fixes and improvements in build steps and signing certificates. Updated documentation sample `nuget.config`.

Co-authored-by: Justin Chung <t-juchung@microsoft.com>

CHANGELOG/7.2.md

@@ -1,5 +1,39 @@
 # 7.2 Changelog
 
+## [7.2.23] - 2024-08-20
+
+### Build and Packaging Improvements
+
+<details>
+
+<summary>
+
+<p>Bump .NET to 6.0.425</p>
+
+</summary>
+
+<ul>
+<li>Add feature flags for removing network isolation</li>
+<li>Bump PackageManagement to 1.4.8.1 (#24162)</li>
+<li>Bump .NET to 6.0.425 (#24161)</li>
+<li>Skip build steps that do not have exe packages (#23945) (#24156)</li>
+<li>Use correct signing certificates for RPM and DEBs (#21522) (#24154)</li>
+<li>Fix exe signing with third party signing for WiX engine (#23878) (#24155)</li>
+<li>Fix error in the vPack release, debug script that blocked release (#23904)</li>
+<li>Add vPack release (#23898)</li>
+<li>Fix nuget publish download path</li>
+<li>Use correct signing certificates for RPM and DEBs (#21522)</li>
+</ul>
+
+</details>
+
+### Documentation and Help Content
+
+- Update docs sample nuget.config (#24109) (#24157)
+
+[7.2.23]: https://github.com/PowerShell/PowerShell/compare/v7.2.22...v7.2.23
+
+
 ## [7.2.22] - 2024-07-18
 
 ### Engine Updates and Fixes