Bump Microsoft.AspNetCore.Mvc.Testing from 8.0.17 to 8.0.20 (#1397)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.Mvc.Testing
  dependency-version: 8.0.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

@@ -44,7 +44,7 @@
 		<PackageVersion Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
 		<PackageVersion Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.17" />
 		<PackageVersion Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="8.0.17" />
-		<PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.17" />
+		<PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.20" />
 		<PackageVersion Include="Microsoft.Azure.Management.DataFactory" Version="9.3.0" />
 		<PackageVersion Include="Microsoft.Azure.Management.Media" Version="6.0.0" />
 		<PackageVersion Include="Microsoft.EntityFrameworkCore" Version="9.0.6" />