[release/6.0-preview7] Update dependencies from dotnet/emsdk (#56318)

* Update dependencies from https://github.com/dotnet/emsdk build 20210726.2

Microsoft.NET.Workload.Emscripten.Manifest-6.0.100
 From Version 6.0.0-preview.7.21373.1 -> To Version 6.0.0-rc.1.21376.2

* Update dependencies from https://github.com/dotnet/emsdk build 20210726.3

Microsoft.NET.Workload.Emscripten.Manifest-6.0.100
 From Version 6.0.0-preview.7.21373.1 -> To Version 6.0.0-rc.1.21376.3

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

eng/Version.Details.xml

@@ -8,9 +8,9 @@
       <Uri>https://github.com/dotnet/msquic</Uri>
       <Sha>d7db669b70f4dd67ec001c192f9809c218cab88b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.100" Version="6.0.0-preview.7.21373.1">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Manifest-6.0.100" Version="6.0.0-rc.1.21376.3">
       <Uri>https://github.com/dotnet/emsdk</Uri>
-      <Sha>87c10bf7340b725c41db592a4c91f64f67096cf9</Sha>
+      <Sha>dce7b4ffb0ea8921133e518a1fb25c58667105f2</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -182,7 +182,7 @@
     <runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMSdkVersion>11.1.0-alpha.1.21362.1</runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMSdkVersion>
     <runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMToolsVersion>11.1.0-alpha.1.21362.1</runtimeosx1012x64MicrosoftNETCoreRuntimeMonoLLVMToolsVersion>
     <!-- emscripten / Node -->
-    <MicrosoftNETWorkloadEmscriptenManifest60100Version>6.0.0-preview.7.21373.1</MicrosoftNETWorkloadEmscriptenManifest60100Version>
+    <MicrosoftNETWorkloadEmscriptenManifest60100Version>6.0.0-rc.1.21376.3</MicrosoftNETWorkloadEmscriptenManifest60100Version>
     <MicrosoftNETRuntimeEmscriptenVersion>$(MicrosoftNETWorkloadEmscriptenManifest60100Version)</MicrosoftNETRuntimeEmscriptenVersion>
     <!-- workloads -->
     <SwixPackageVersion>1.1.87-gba258badda</SwixPackageVersion>