Bump PowerShellStandard.Library from 5.1.0 to 5.1.1 (#65)

Bumps [PowerShellStandard.Library](https://github.com/PowerShell/PowerShellStandard) from 5.1.0 to 5.1.1.
- [Release notes](https://github.com/PowerShell/PowerShellStandard/releases)
- [Commits](https://github.com/PowerShell/PowerShellStandard/commits)

---
updated-dependencies:
- dependency-name: PowerShellStandard.Library
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/PSRule.Monitor/PSRule.Monitor.csproj

@@ -30,7 +30,7 @@ This project uses GitHub Issues to track bugs and feature requests. See GitHub p
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="PowerShellStandard.Library" Version="5.1.0" PrivateAssets="All" />
+    <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" PrivateAssets="All" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>