Bump System.Management.Automation from 7.2.16 to 7.4.0 in /src/PsSmo

Bumps [System.Management.Automation](https://github.com/PowerShell/PowerShell) from 7.2.16 to 7.4.0.
- [Release notes](https://github.com/PowerShell/PowerShell/releases)
- [Commits](PowerShell/PowerShell@v7.2.16...v7.4.0)

---
updated-dependencies:
- dependency-name: System.Management.Automation
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

src/PsSmo/PsSmo.csproj

@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Azure.Services.AppAuthentication" Version="1.6.2" />
     <PackageReference Include="Microsoft.SqlServer.SqlManagementObjects" Version="170.18.0" />
-    <PackageReference Include="System.Management.Automation" Version="7.2.16" />
+    <PackageReference Include="System.Management.Automation" Version="7.4.0" />
     <PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.1" />
   </ItemGroup>