Bump Meziantou.Analyzer from 2.0.250 to 2.0.257

---
updated-dependencies:
- dependency-name: Meziantou.Analyzer
  dependency-version: 2.0.257
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-	<GlobalPackageReference Include="Meziantou.Analyzer" Version="2.0.250" />
+	<GlobalPackageReference Include="Meziantou.Analyzer" Version="2.0.257" />
 	<GlobalPackageReference Include="PolySharp" Version="1.15.0" />
   </ItemGroup>
 </Project>