test: fix some times happening race condition 'Collection was modified; enumeration operation may not execute.

[skwasjer]

From job log:

System.InvalidOperationException : Collection was modified; enumeration operation may not execute.
  Stack Trace:
     at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
   at System.Linq.Enumerable.All[TSource](IEnumerable`1 source, Func`2 predicate)
   at Hangfire.Correlate.HangfireIntegrationTests.WaitUntilJobCompletedAsync(String jobId, Int32 maxWaitInMilliseconds) in /Users/runner/work/Hangfire.Correlate/Hangfire.Correlate/test/Hangfire.Correlate.Tests/HangfireIntegrationTests.cs:line 75
   at Hangfire.Correlate.HangfireIntegrationTests.Given_job_is_queued_outside_correlationContext_should_use_jobId_as_correlationId() in /Users/runner/work/Hangfire.Correlate/Hangfire.Correlate/test/Hangfire.Correlate.Tests/HangfireIntegrationTests.cs:line 189

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #25 (14fec9c) into main (a385205) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files