fix(deps): update dependency postal-mime to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
postal-mime (source)	^2.7.5 → ^4.0.0

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Release Notes

postalsys/postal-mime (postal-mime)

v4.0.0

Compare Source

⚠ BREAKING CHANGES

• Node.js 20 or newer is required.
• Attachment.disposition is typed as AttachmentDisposition | null, which accepts any Content-Disposition token, instead of 'attachment' | 'inline' | null. The parsed output is unchanged, but code that assigns the value to the narrower type has to widen it.
• the ES module entry point moved from src/postal-mime.js to dist/esm/postal-mime.js, so browser code that imported the file from node_modules directly has to use the new path. Consumers that import postal-mime by name are unaffected.

Features

• convert to TypeScript and ship ES module and CommonJS builds (2559c82)
• declare the CommonJS entry point with export = and ship source maps (84d1159)
• type the attachment disposition as the token the message carries (4bb2796)

Bug Fixes

• keep the public object types assignable to an index signature (3363039)

Miscellaneous Chores

• require Node.js 20 or newer (21eaae6)

v3.0.1

Compare Source

Bug Fixes

• collect parsed addresses in linear time (68cd065), closes #​97
• convert html to text in linear time (38b2a83), closes #​97
• detect angle bracket addresses in decoded words in linear time (390be2b), closes #​97
• normalize calendar attachment line endings in linear time (36edda7), closes #​97
• strip header comments in linear time (5d877da), closes #​97
• trim header whitespace in linear time (932441f), closes #​97
• trim text around an extracted address in linear time (511a194), closes #​97
• unfold format=flowed text in linear time (237c7a9), closes #​97

Performance Improvements

• skip decoder construction for charset labels TextDecoder cannot know (5407771), closes #​97

v3.0.0

Compare Source

⚠ BREAKING CHANGES

• header values in headers[].value keep the whitespace that folding introduced instead of having every whitespace run collapsed to a single space, single value headers such as subject and from resolve to the first occurrence of a duplicated header rather than the last, and to, cc, bcc and replyTo are returned in document order rather than reversed.

Bug Fixes

• resolve non-WHATWG charset labels instead of falling back to windows-1252 (6378618), closes #​94
• unfold headers per RFC 5322 and resolve duplicated headers first-wins (7b0ca9d)

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