Bump the tests group with 2 updates

Bumps Meziantou.Analyzer from 2.0.256 to 2.0.257
Bumps SonarAnalyzer.CSharp from 10.15.0.120848 to 10.16.1.129956

---
updated-dependencies:
- dependency-name: Meziantou.Analyzer
  dependency-version: 2.0.257
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tests
- dependency-name: SonarAnalyzer.CSharp
  dependency-version: 10.16.1.129956
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: tests
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/iTextSharp.LGPLv2.Core/iTextSharp.LGPLv2.Core.csproj

@@ -57,11 +57,11 @@
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="Meziantou.Analyzer" Version="2.0.256">
+        <PackageReference Include="Meziantou.Analyzer" Version="2.0.257">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="SonarAnalyzer.CSharp" Version="10.15.0.120848">
+        <PackageReference Include="SonarAnalyzer.CSharp" Version="10.16.1.129956">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>