Update OTel SDK version to 1.7.0

[utpilla]

Changes

• Update OTel SDK version to 1.7.0

• Appropriate CHANGELOG.md updated for non-trivial changes

[codecov]

Codecov Report

Merging #1486 (834b89a) into main (71655ce) will decrease coverage by 0.52%.
Report is 90 commits behind head on main.
The diff coverage is 54.21%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1486      +/-   ##
==========================================
- Coverage   73.91%   73.40%   -0.52%     
==========================================
  Files         267      255      -12     
  Lines        9615     9502     -113     
==========================================
- Hits         7107     6975     -132     
- Misses       2508     2527      +19     

Flag	Coverage Δ
unittests-Exporter.Geneva	57.92% <32.14%> (?)
unittests-Exporter.OneCollector	89.72% <100.00%> (?)
unittests-Extensions	82.75% <100.00%> (?)
unittests-Instrumentation.AspNet	72.56% <ø> (?)
unittests-Instrumentation.EventCounters	75.92% <ø> (?)
unittests-Instrumentation.Owin	85.71% <ø> (?)
unittests-Instrumentation.Process	100.00% <ø> (?)
unittests-Instrumentation.Runtime	100.00% <ø> (?)
unittests-Instrumentation.StackExchangeRedis	71.00% <ø> (?)
unittests-Instrumentation.Wcf	78.47% <ø> (?)
unittests-PersistentStorage	58.80% <ø> (?)
unittests-ResourceDetectors.Azure	80.90% <ø> (?)
unittests-ResourceDetectors.ProcessRuntime	76.08% <ø> (?)
unittests-Solution	80.76% <100.00%> (?)

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

Files	Coverage Δ
....Exporter.Geneva/GenevaExporterHelperExtensions.cs	100.00% <ø> (+31.81%)	⬆️
...Telemetry.Exporter.Geneva/GenevaExporterOptions.cs	90.00% <ø> (ø)
...OpenTelemetry.Exporter.Geneva/GenevaLogExporter.cs	85.00% <ø> (+7.50%)	⬆️
...lemetry.Exporter.Geneva/GenevaLoggingExtensions.cs	100.00% <ø> (+14.28%)	⬆️
...enTelemetry.Exporter.Geneva/GenevaTraceExporter.cs	82.50% <ø> (+7.50%)	⬆️
...xporter.Geneva/Internal/ConnectionStringBuilder.cs	92.94% <100.00%> (ø)
...ry.Exporter.Geneva/Internal/ExporterEventSource.cs	14.28% <ø> (+9.52%)	⬆️
...eneva/Internal/ReentrantActivityExportProcessor.cs	100.00% <ø> (ø)
...porter.Geneva/Internal/ReentrantExportProcessor.cs	100.00% <ø> (ø)
...ry.Exporter.Geneva/Internal/TableNameSerializer.cs	98.93% <ø> (ø)
... and 97 more

... and 170 files with indirect coverage changes

[CodeBlanch]

LGTM