Merged PR 27627: Update changelog for the v7.3.7 release

Update changelog for the v7.3.7 release. Text linting passed locally.

CHANGELOG/7.3.md

@@ -1,5 +1,40 @@
 # 7.3 Changelog
 
+## [7.3.7] - 2023-09-18
+
+### Build and Packaging Improvements
+
+<details>
+
+<summary>
+
+<p>Bump .NET SDK version to 7.0.401</p>
+
+</summary>
+
+<ul>
+<li>Update 'ThirdPartyNotices.txt' (Internal 27602)</li>
+<li>Update to use .NET SDK 7.0.401 (Internal 27591)</li>
+<li>Remove <code>HostArchitecture</code> dynamic parameter for <code>osxpkg</code> (#19917)</li>
+<li>Remove spelling CI in favor of GitHub Action (#20248)</li>
+<li>Enable vPack provenance data (#20253)</li>
+<li>Start using new packages.microsoft.com cli (#20252)</li>
+<li>Add mariner arm64 to PMC release (#20251)</li>
+<li>Add mariner arm64 package build to release build (#20250)</li>
+<li>Make PR creation tool use <code>--web</code> because it is more reliable (#20247)</li>
+<li>Update variable used to bypass the blocking check for multiple NuGet feeds (#20246)</li>
+<li>Publish rpm package for rhel9 (#20245)</li>
+<li>Add runtime and packaging type info for mariner2 arm64 (#20244)</li>
+</ul>
+
+</details>
+
+### Documentation and Help Content
+
+- Update man page to match current help for pwsh (#20249)
+
+[7.3.7]: https://github.com/PowerShell/PowerShell/compare/v7.3.6...v7.3.7
+
 ## [7.3.6] - 2023-07-13
 
 ### Build and Packaging Improvements