Merged PR 25327: Update changelog for v7.3.4 release

Update changelog for v7.3.4 release

.spelling

@@ -1588,6 +1588,7 @@ ci.psm1
 jcotton42
 centos-7
 Security.types.ps1xml
+optout
  - ADOPTERS.md
 MicrosoftPowerBIMgmt
  - tools/clearlyDefined/readme.md

CHANGELOG/7.3.md

@@ -1,5 +1,46 @@
 # 7.3 Changelog
 
+## [7.3.4] - 2023-04-12
+
+### Engine Updates and Fixes
+
+- Add instrumentation to `AmsiUtil` and make the `init` variable readonly (#18727)
+- Fix support for `NanoServer` due to the lack of AMSI (#18882)
+- Adding missing guard for telemetry optout to avoid `NullReferenceException` when importing modules (#18949) (Thanks @powercode!)
+- Fix `VtSubstring` helper method to correctly check chars copied (#19240)
+- Fix `ConciseView` to handle custom `ParserError` error records (#19239)
+
+### Build and Packaging Improvements
+
+<details>
+
+<summary>
+
+<p>Bump to use .NET 7.0.5</p>
+
+</summary>
+
+<ul>
+<li>Update ThirdPartyNotices.txt</li>
+<li>Update cgmanifest.json</li>
+<li>Fix the template that creates nuget package</li>
+<li>Update the wix file</li>
+<li>Update to .NET SDK 7.0.203</li>
+<li>Skip VT100 tests on Windows Server 2012R2 as console does not support it (#19413)</li>
+<li>Improve package management acceptance tests by not going to the gallery (#19412)</li>
+<li>Fix stage dependencies and typo in release build (#19353)</li>
+<li>Fix issues in release build and release pipeline (#19338)</li>
+<li>Restructure the package build to simplify signing and packaging stages (#19321)</li>
+<li>Test fixes for stabilizing tests (#19068)</li>
+<li>Add stage for symbols job in Release build (#18937)</li>
+<li>Use reference assemblies generated by dotnet (#19302)</li>
+<li>Add URL for all distributions (#19159)</li>
+</ul>
+
+</details>
+
+[7.3.4]: https://github.com/PowerShell/PowerShell/compare/v7.3.3...v7.3.4
+
 ## [7.3.3] - 2023-02-23
 
 ### Build and Packaging Improvements