v5.43.0

[!WARNING]
This release has known stability issues when using runtime metrics or custom metrics. Please avoid and update to a more recent version instead.

• [3b0fe086de] - (SEMVER-MINOR) Update profiler to 5.6.0, for improved idle time sampling. (Attila Szegedi) #5425
• [010910f1f2] - (SEMVER-MINOR) report truncation metrics (Ilyas Shabi) #5380
• [700aee67ce] - (SEMVER-PATCH) pin @opentelemetry/instrumentation-express testing to 0.47.1 (Juan Antonio Fernández de Alba) #5433
• [0d3e671ae0] - (SEMVER-MINOR) add span events as a top level field for v0.4 encoding (William Conti) #5229
• [e85cdaa8a4] - (SEMVER-PATCH) fix runtime metrics histogram sending invalid data (Roch Devost) #5414
• [28eaa41569] - (SEMVER-PATCH) fix(llmobs): additional options like for manual span instrumentation are properly recognized (Sam Brenner) #5424
• [47626620e5] - (SEMVER-PATCH) [test optimization] Fix latest vitest release (Juan Antonio Fernández de Alba) #5427