Changelog (v8.1.5...v8.1.6)
- bug #65746 Drop trace args from FlattenException normalization (@ousamabenyounes, @nicolas-grekas)
- bug #65693 Restrict what "X-Message-Stamp-*" headers can put in an envelope (@nicolas-grekas)
- bug #65679 Cover the headers that describe the message with the SigningSerializer signature (@nicolas-grekas)