* Engine Updates and Fixes

- Fix the parsing code for .NET method generic arguments (#16937)
- Allow the `PSGetMemberBinder` to get value of `ByRef` property (#16956)
- Allow a collection that contains `Automation.Null` elements to be piped to pipeline (#16957)

* General Cmdlet Updates and Fixes

- Add the module `CompatPowerShellGet` to the allow-list of telemetry modules (#16935)
- Fix `Enter-PSHostProcess` and `Get-PSHostProcessInfo` cmdlets by handling processes that have exited (#16946)
- Improve Hashtable completion in multiple scenarios (#16498) (Thanks @MartinGC94!)

* Code Cleanup

- Fix a typo in `CommandHelpProvider.cs` (#16949) (Thanks @eltociear!)

* Tests

- Update a few tests to make them more stable in CI (#16944)
- Roll back Windows images used in testing to Windows Server 2019 (#16958)

* Build and Packaging Improvements

<details>

<summary>
<p>Update .NET SDK to 7.0.0-preview.2</p>
</summary>

<ul>
<li>Update .NET to 7.0.0-preview.2 build (#16930)</li>
<li>Update <code>AzureFileCopy</code> task and fix the syntax for specifying <code>pool</code> (#17013)</li>
</ul>

</details>

[7.3.0-preview.3]: https://github.com/PowerShell/PowerShell/compare/v7.3.0-preview.2...v7.3.0-preview.3