Bump StreamJsonRpc from 2.19.27 to 2.20.20

Bumps [StreamJsonRpc](https://github.com/microsoft/vs-streamjsonrpc) from 2.19.27 to 2.20.20.
- [Release notes](https://github.com/microsoft/vs-streamjsonrpc/releases)
- [Commits](https://github.com/microsoft/vs-streamjsonrpc/commits)

---
updated-dependencies:
- dependency-name: StreamJsonRpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Flow.Launcher.Core/Flow.Launcher.Core.csproj

@@ -58,7 +58,7 @@
     <PackageReference Include="Meziantou.Framework.Win32.Jobs" Version="3.4.0" />
     <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.1" />
     <PackageReference Include="squirrel.windows" Version="1.5.2" NoWarn="NU1701" />
-    <PackageReference Include="StreamJsonRpc" Version="2.19.27" />
+    <PackageReference Include="StreamJsonRpc" Version="2.20.20" />
   </ItemGroup>
 
   <ItemGroup>