Bump Microsoft.Build from 17.11.4 to 17.12.6

Bumps [Microsoft.Build](https://github.com/dotnet/msbuild) from 17.11.4 to 17.12.6.
- [Release notes](https://github.com/dotnet/msbuild/releases)
- [Changelog](https://github.com/dotnet/msbuild/blob/main/documentation/Changelog.md)
- [Commits](dotnet/msbuild@v17.11.4...v17.12.6)

---
updated-dependencies:
- dependency-name: Microsoft.Build
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/vpatch.csproj

@@ -34,7 +34,7 @@
 
     <ItemGroup>
         <PackageReference Include="CommandLineParser" Version="2.9.1"/>
-        <PackageReference Include="Microsoft.Build" Version="17.11.4" ExcludeAssets="runtime"/>
+        <PackageReference Include="Microsoft.Build" Version="17.12.6" ExcludeAssets="runtime"/>
         <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.12.6" ExcludeAssets="runtime"/>
         <PackageReference Include="Microsoft.Build.Locator">
             <Version>1.7.8</Version>