Bump ZXing.Net from 0.16.6 to 0.16.8

Bumps [ZXing.Net](https://github.com/micjahn/ZXing.Net) from 0.16.6 to 0.16.8.
- [Release notes](https://github.com/micjahn/ZXing.Net/releases)
- [Commits](micjahn/ZXing.Net@v0.16.6.0...v0.16.8.0)

---
updated-dependencies:
- dependency-name: ZXing.Net
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

barcoder/barcoder.csproj

@@ -9,7 +9,7 @@
     <PackageReference Include="Serilog.AspNetCore" Version="4.1.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.1" />
     <PackageReference Include="System.Drawing.Common" Version="5.0.2" />
-    <PackageReference Include="ZXing.Net" Version="0.16.6" />
+    <PackageReference Include="ZXing.Net" Version="0.16.8" />
   </ItemGroup>
 
 </Project>