Bump MinVer from 6.0.0 to 7.0.0 (#316)

---
updated-dependencies:
- dependency-name: MinVer
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

Directory.Build.props

@@ -11,7 +11,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
-        <PackageReference Include="MinVer" Version="6.0.0" PrivateAssets="All" />
+        <PackageReference Include="MinVer" Version="7.0.0" PrivateAssets="All" />
         <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556" PrivateAssets="All" />
     </ItemGroup>
 </Project>