Update error incident generation

Added

• Update our support OpenTelemetry Semantic Conventions for code attributes used in unique span detection.

Changed

• The shutdown behavior on internal errors is improved, and now logs what crashed and why.

• Limit appsignal.tag.<key> tag values to 256 characters.

• Rename an internal span event attribute for metadata distributions. Older collectors will no longer report metadata distributions for error incidents.

  This will create new incidents for existing errors. This is intentional.

Fixed

• Fix a crash on truncating Unicode values.

This release can be installed through our collector packages and Docker image.