Hangfire: Downgrade OpenTelemetry.Api.ProviderBuilderExtensions to 1.6.0 to avoid MS.Extensions.* v8 dependencies

[gao-artur]

Fixes #1500.

Changes

Temporarily downgrading the OTel dependency. The version will be restored after the instrumentation release.

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue #
• Changes in public API reviewed

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (71655ce) 73.91% compared to head (6fa6cd9) 80.55%.
Report is 101 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1502      +/-   ##
==========================================
+ Coverage   73.91%   80.55%   +6.64%     
==========================================
  Files         267      113     -154     
  Lines        9615     3055    -6560     
==========================================
- Hits         7107     2461    -4646     
+ Misses       2508      594    -1914     

Flag	Coverage Δ
unittests-Solution	80.55% <90.62%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...Telemetry.Exporter.InfluxDB/InfluxDBEventSource.cs	60.00% <ø> (ø)
...ry.Exporter.InfluxDB/InfluxDBExporterExtensions.cs	100.00% <100.00%> (ø)
...metry.Exporter.InfluxDB/InfluxDBMetricsExporter.cs	84.61% <ø> (-3.85%)	⬇️
...Telemetry.Exporter.InfluxDB/PointDataExtensions.cs	87.50% <100.00%> (ø)
...ry.Exporter.InfluxDB/TelegrafPrometheusWriterV1.cs	100.00% <ø> (ø)
...ry.Exporter.InfluxDB/TelegrafPrometheusWriterV2.cs	100.00% <ø> (ø)
...stana/Implementation/InstanaExporterEventSource.cs	0.00% <ø> (ø)
...try.Exporter.Instana/Implementation/InstanaSpan.cs	100.00% <ø> (ø)
...orter.Instana/Implementation/InstanaSpanFactory.cs	100.00% <ø> (ø)
...er.Instana/Implementation/InstanaSpanSerializer.cs	93.79% <ø> (ø)
... and 43 more

... and 213 files with indirect coverage changes

[Kielek]

@fred2u, please review

[utpilla]

@gao-artur Did you run into any specific issues when bumping the Microsoft.Extensions.* package versions?

[gao-artur]

I have seen that I need to bump too many packages and will have to do the same in all our repositories that use OTel and stopped. From my experience EVERY major version of these packages bring regression bugs and this is not something I'm ready to do as part of OTel upgrade. This should be done as separate story and tested very well.
I explained in the referenced issue why this upgrade is problematic and why I thing OTel team should change their policy of dependencies versioning.

[utpilla]

We could have a release based on 1.6.0 but we should upgrade the dependency to 1.7.0 right after the next pre-release version of this package.

[gao-artur]

Sure. Will revert immediately after the release.

[Kielek]

@gao-artur. merging. Please create PR with the release request (just changelog.md). I can handle release tommorow morning my time.