Use 7.0.306 .NET SDK images

[Kielek]

Propagate changes from open-telemetry/opentelemetry-dotnet#4757

Changes

Please provide a brief description of the changes here.

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

Merging #1300 (75bdd90) into main (e0eeb0a) will increase coverage by 0.30%.
Report is 9 commits behind head on main.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1300      +/-   ##
==========================================
+ Coverage   73.83%   74.13%   +0.30%     
==========================================
  Files         264      256       -8     
  Lines        9386     9345      -41     
==========================================
- Hits         6930     6928       -2     
+ Misses       2456     2417      -39     

Files Changed	Coverage Δ
...ry.Exporter.Geneva/TLDExporter/TldTraceExporter.cs	32.31% <ø> (ø)
...on.AWS/Implementation/AWSTracingPipelineHandler.cs	87.75% <ø> (ø)
...tion.AWS/Implementation/SnsRequestContextHelper.cs	95.00% <ø> (ø)
...tion.AWS/Implementation/SqsRequestContextHelper.cs	95.00% <ø> (ø)
...ntation.AWSLambda/Implementation/AWSLambdaUtils.cs	81.57% <ø> (ø)
...ResourceDetectors.Azure/AzureVmMetadataResponse.cs	94.28% <ø> (ø)
src/OpenTelemetry.Sampler.AWS/RateLimiter.cs	100.00% <ø> (ø)
...c/OpenTelemetry.Sampler.AWS/RateLimitingSampler.cs	100.00% <ø> (ø)
...Lambda/Implementation/AWSLambdaResourceDetector.cs	100.00% <100.00%> (ø)
...ation.AWSLambda/TracerProviderBuilderExtensions.cs	100.00% <100.00%> (ø)
... and 1 more

... and 8 files with indirect coverage changes

[CodeBlanch]

@Kielek FYI I did a more thorough fix on open-telemetry/opentelemetry-dotnet#4759. Fixing the SDK to 7.0.306 is fine to unblock things but ultimately this will have to be solved before jumping to .NET 8 SDK 😄

[utpilla]

@Kielek FYI I did a more thorough fix on open-telemetry/opentelemetry-dotnet#4759. Fixing the SDK to 7.0.306 is fine to unblock things but ultimately this will have to be solved before jumping to .NET 8 SDK 😄

Fixed it in #1301