[MrAlias]

Fix #8465

Relevant upstream v1.42.0 release notes:

Highlights

• Generative AI Migration: All gen_ai.* attributes, metrics, events, and spans have been deprecated and moved to the dedicated OpenTelemetry GenAI Semantic Conventions Repository. (#3696)
• Graduations to Stable: A core selection of Kubernetes and container registry resource attributes have officially graduated to stable status. (#3382)
• Promotions to Release Candidate: Several conventions advanced to release_candidate, including cpu.mode, process attributes, and core CPU time metrics. (#3694, #3041, #3001)

Breaking changes

• gen-ai: Move Generative AI semantic conventions to a dedicated repository. (#3696)
• http: Change network.peer.address attribute requirement level from Recommended to Opt-In on the http.client.open_connections and http.client.connection.duration metrics. (#3279)
• v8js: Rename v8js.memory.heap.limit to v8js.memory.heap.space.size, and add a new v8js.memory.heap.limit UpDownCounter. (#3476)

Bug fixes

• container: Remove kernel from cpu.mode enum and clarify container cpu states. (#3700)

This PR also:

• adds the generated go.opentelemetry.io/otel/semconv/v1.42.0 package
• upgrades repo imports, depguard, documentation examples, and schema URL expectations to go.opentelemetry.io/otel/semconv/v1.42.0
• keeps deprecated GenAI/MCP/OpenAI declarations out of the new package, matching Go's existing semconv deprecation strategy where users continue importing the older generated package for deprecated declarations

GenAI note:

Upstream semantic-conventions v1.42.0 deprecates the core GenAI, MCP, and OpenAI definitions after moving them to https://github.com/open-telemetry/semantic-conventions-genai. Since Go's generated semconv packages exclude deprecated conventions, semconv/v1.42.0 removes those declarations. The separate GenAI package and schema URL design still has open questions for Go, especially package discovery, version pairing with core semconv, and which schema URL instrumentation should use when emitting mixed GenAI and core attributes. That follow-up is being discussed in open-telemetry/semantic-conventions-genai#247.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 27 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.1%. Comparing base (bb6f1c6) to head (0a98534).

Files with missing lines	Patch %	Lines
semconv/v1.42.0/error_type.go	0.0%	27 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #8484     +/-   ##
=======================================
+ Coverage   83.8%   84.1%   +0.2%     
=======================================
  Files        325     325             
  Lines      26272   26194     -78     
=======================================
  Hits       22041   22041             
+ Misses      3849    3771     -78     
  Partials     382     382             

Files with missing lines	Coverage Δ
bridge/opentracing/mock.go	76.3% <ø> (ø)
...log/otlploggrpc/internal/observ/instrumentation.go	99.3% <ø> (ø)
...log/otlploghttp/internal/observ/instrumentation.go	100.0% <ø> (ø)
.../otlpmetricgrpc/internal/observ/instrumentation.go	90.0% <ø> (ø)
...otlpmetric/otlpmetricgrpc/internal/otest/client.go	97.5% <ø> (ø)
.../otlpmetrichttp/internal/observ/instrumentation.go	100.0% <ø> (ø)
...otlpmetric/otlpmetrichttp/internal/otest/client.go	97.5% <ø> (ø)
...e/otlptracegrpc/internal/observ/instrumentation.go	100.0% <ø> (ø)
...e/otlptracehttp/internal/observ/instrumentation.go	100.0% <ø> (ø)
...ters/prometheus/internal/observ/instrumentation.go	98.1% <ø> (ø)
... and 22 more

... and 3 files with indirect coverage changes

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[ChrsMark]

Thank's!