Bump System.Reflection.Metadata from 5.0.0 to 7.0.0 (#981)

Bumps [System.Reflection.Metadata](https://github.com/dotnet/runtime) from 5.0.0 to 7.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/commits)

---
updated-dependencies:
- dependency-name: System.Reflection.Metadata
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

src/WinSW.Tests/WinSW.Tests.csproj

@@ -25,7 +25,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'net7.0-windows'">
-    <PackageReference Include="System.Reflection.Metadata" Version="5.0.0" />
+    <PackageReference Include="System.Reflection.Metadata" Version="7.0.0" />
     <Reference Include="System.ServiceProcess" />
   </ItemGroup>