Bump System.ComponentModel.Composition in /mef/simple-calculator/vb

Bumps [System.ComponentModel.Composition](https://github.com/dotnet/runtime) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v7.0.0...v8.0.0)

---
updated-dependencies:
- dependency-name: System.ComponentModel.Composition
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

mef/simple-calculator/vb/MefCalculator/MefCalculator.vbproj

@@ -1,12 +1,12 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <RootNamespace>MefCalculator</RootNamespace>
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.ComponentModel.Composition" Version="7.0.0" />
+    <PackageReference Include="System.ComponentModel.Composition" Version="8.0.0" />
   </ItemGroup>
 
   <PropertyGroup>

mef/simple-calculator/vb/SimpleCalculator2.vbproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -26,7 +26,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.ComponentModel.Composition" Version="7.0.0" />
+    <PackageReference Include="System.ComponentModel.Composition" Version="8.0.0" />
   </ItemGroup>
 
   <ItemGroup>