Bump AsyncFixer from 1.6.0 to 2.1.0 (#124)

---
updated-dependencies:
- dependency-name: AsyncFixer
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build/common.props

@@ -32,7 +32,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All"/>
-    <PackageReference Include="AsyncFixer" Version="1.6.0" PrivateAssets="All" />
+    <PackageReference Include="AsyncFixer" Version="2.1.0" PrivateAssets="All" />
     <PackageReference Include="MinVer" Version="6.0.0" PrivateAssets="All" />
   </ItemGroup>