[Instrumentation.Hangfire] NugetAudit - fix dependencies with known vulnerabilities

[Kielek]

Follow up to #2034

Changes

    <!-- Newtonsoft.Json is indirect reference. It is needed to upgrade it directly to avoid https://github.com/advisories/GHSA-5crp-9r3c-p9vr -->
    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />

Changelog based on https://github.com/open-telemetry/opentelemetry-dotnet/blob/37535a5607ee7e4056c0e274ec01d1e0111a64be/src/OpenTelemetry.Exporter.Console/CHANGELOG.md#L112-L114

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• [ ] Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.58%. Comparing base (71655ce) to head (df118c9).
Report is 420 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2057       +/-   ##
===========================================
+ Coverage   73.91%   93.58%   +19.67%     
===========================================
  Files         267        4      -263     
  Lines        9615       78     -9537     
===========================================
- Hits         7107       73     -7034     
+ Misses       2508        5     -2503     

Flag	Coverage Δ
unittests-Instrumentation.Hangfire	93.58% <ø> (?)

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see 267 files with indirect coverage changes