Bump Microsoft.NETCore.Platforms from 6.0.6 to 7.0.0 (#2946)

Bumps [Microsoft.NETCore.Platforms](https://github.com/dotnet/runtime) from 6.0.6 to 7.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.6...v7.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.NETCore.Platforms
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

Author: dependabot[bot]

Directory.packages.props

@@ -12,7 +12,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.3.1" />
     <PackageVersion Include="Microsoft.Composition" Version="1.0.31" />
     <PackageVersion Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageVersion Include="Microsoft.NETCore.Platforms" Version="6.0.6" />
+    <PackageVersion Include="Microsoft.NETCore.Platforms" Version="7.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
     <PackageVersion Include="Microsoft.Toolkit.MVVM" Version="7.1.2" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.1" />