Bump OmniSharp to v0.19.3

So `v0.19.4` is out on GitHub, but has not yet released to the NuGet
gallery, and I don't wish to delay this any longer. We'll let Dependabot
bring that in as soon as it can be. The only thing missing is the DryIoc
update, which we're simply hoping solves an issue.

Author: andyleejordan

Diff for: .vsts-ci/azure-pipelines-ci.yml

@@ -16,15 +16,6 @@ trigger:
 pr:
 - master
 
-# TODO: Remove this when OmniSharp updates
-resources:
-  repositories:
-  - repository: OmniSharp
-    type: github
-    endpoint: GitHub
-    name: andschwa/csharp-language-server-protocol
-    ref: preview
-
 jobs:
 - job: PS51_Win2016
   displayName: PowerShell 5.1 - Windows Server 2016

Diff for: .vsts-ci/templates/ci-general.yml

@@ -7,23 +7,18 @@ steps:
 - pwsh: $PSVersionTable
   displayName: PowerShell version
 
-# TODO: Remove this when OmniSharp updates
-- checkout: self
-- checkout: OmniSharp
-
 - task: PowerShell@2
   displayName: Build and test
   inputs:
-    filePath: $(Build.SourcesDirectory)/PowerShellEditorServices/tools/azurePipelinesBuild.ps1
-    workingDirectory: $(Build.SourcesDirectory)/PowerShellEditorServices
+    filePath: tools/azurePipelinesBuild.ps1
     pwsh: ${{ parameters.pwsh }}
 
 # NOTE: We zip the artifacts because they're ~20 MB compressed, but ~300 MB raw,
 # and we have limited pipeline artifact storage space.
 - task: ArchiveFiles@2
   displayName: Zip pipeline artifacts
   inputs:
-    rootFolderOrFile: $(Build.SourcesDirectory)/PowerShellEditorServices/module
+    rootFolderOrFile: module
     includeRootFolder: false
     archiveType: zip
     archiveFile: PowerShellEditorServices-Build.zip

Diff for: src/PowerShellEditorServices/PowerShellEditorServices.csproj

@@ -28,11 +28,8 @@
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
-    <!-- TODO: Update to 0.19.3 when available -->
-    <!-- <PackageReference Include="OmniSharp.Extensions.LanguageServer" Version="0.19.2" /> -->
-    <!-- <PackageReference Include="OmniSharp.Extensions.DebugAdapter.Server" Version="0.19.2" /> -->
-    <ProjectReference Include="..\..\..\csharp-language-server-protocol\src\Server\Server.csproj" />
-    <ProjectReference Include="..\..\..\csharp-language-server-protocol\src\Dap.Server\Dap.Server.csproj" />
+    <PackageReference Include="OmniSharp.Extensions.LanguageServer" Version="0.19.3" />
+    <PackageReference Include="OmniSharp.Extensions.DebugAdapter.Server" Version="0.19.3" />
     <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" />
     <PackageReference Include="Serilog" Version="2.10.0" />
     <PackageReference Include="Serilog.Extensions.Logging" Version="3.0.1" />
@@ -45,6 +42,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Compile Remove="Extensions\Api\DocumentSymbolService.cs" />
+    <Compile Remove="Extensions\Api\DocumentSymbolService.cs"/>
   </ItemGroup>
 </Project>

Diff for: test/PowerShellEditorServices.Test.E2E/PowerShellEditorServices.Test.E2E.csproj

@@ -10,11 +10,8 @@
     <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <!-- TODO: Update to 0.19.3 when available -->
-    <!-- <PackageReference Include="OmniSharp.Extensions.LanguageClient" Version="0.19.2" /> -->
-    <!-- <PackageReference Include="OmniSharp.Extensions.DebugAdapter.Client" Version="0.19.2" /> -->
-    <ProjectReference Include="..\..\..\csharp-language-server-protocol\src\Client\Client.csproj" />
-    <ProjectReference Include="..\..\..\csharp-language-server-protocol\src\Dap.Client\Dap.Client.csproj" />
+    <PackageReference Include="OmniSharp.Extensions.LanguageClient" Version="0.19.3" />
+    <PackageReference Include="OmniSharp.Extensions.DebugAdapter.Client" Version="0.19.3" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />

Diff for: test/PowerShellEditorServices.Test/PowerShellEditorServices.Test.csproj

@@ -34,9 +34,7 @@
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
-    <!-- TODO: Update to 0.19.3 when available -->
-    <!-- <PackageReference Include="OmniSharp.Extensions.LanguageServer" Version="0.19.2" /> -->
-    <ProjectReference Include="..\..\..\csharp-language-server-protocol\src\Server\Server.csproj" />
+    <PackageReference Include="OmniSharp.Extensions.LanguageServer" Version="0.19.3" />
   </ItemGroup>
 
   <ItemGroup>