Bump BitMiracle.LibTiff.NET from 2.4.649 to 2.4.660 in the tests group

Bumps the tests group with 1 update: BitMiracle.LibTiff.NET.


Updates `BitMiracle.LibTiff.NET` from 2.4.649 to 2.4.660

---
updated-dependencies:
- dependency-name: BitMiracle.LibTiff.NET
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tests
...

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

Author: dependabot[bot]

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

@@ -26,7 +26,7 @@
         <PackageReference Include="MSTest.TestAdapter" Version="3.6.4"/>
         <PackageReference Include="MSTest.TestFramework" Version="3.6.4"/>
 
-        <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.649"/>
+        <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.660"/>
     </ItemGroup>
     <ItemGroup>
         <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}"/>