Bump mail from 2.7.1 to 2.8.1

[dependabot]

Bumps mail from 2.7.1 to 2.8.1.

Changelog

Sourced from mail's changelog.

== Version 2.8.1 (unreleased)

Bug Fixes:

• Regression: sendmail accepts string :arguments (@​sebbASF)
• Regression: accept enable_starttls_auto: false @​ahorek

== Version 2.8.0.1 (12-Jan-2023)

Bug fixes:

• Regression: incorrect permissions for some files (mikel)

== Version 2.8.0 (3-Dec-2022)

Breaking changes:

• Add Ruby 3.1 support (deivid-rodriguez, voxik, eregon)
• Drop support for Ruby < 2.5 (deivid-rodriguez, voxik)
• Message#without_attachments! now deletes nested attachments. (TylerRick)
• Sendmail and exim delivery now raise DeliveryError when the command exits with a nonzero exitstatus. (benmmurphy, CoolElvis)
• Sendmail and exim delivery :arguments option must be an array of string args. (benmmurphy)
• Passing unparsed headers to Mail::Field.new is no longer supported. Use Mail::Field.parse. (jeremy)
• Removed long-deprecated features: Message#register_for_delivery_notification, #has_transfer_encoding?, #add_transfer_encoding, #transfer_encoding, #message_content_type, #mime_parameters, #encode!, and Part#inline_content_id. (jeremy)

Deprecations:

• Deprecates Mail::CheckDeliveryParams in favour of Mail::SmtpEnvelope

Compatibility:

• Handle a wide variety of non-RFC Message-ID formats. (peterkovacs)
• Normalize Quoted-Printable line endings for text content. (jeremy)
• Gracefully parse invalid dates in Date and Received headers. (okkez)
• Converting to multipart moves Content-* headers to the new part. (kirikak2)
• Multipart Content-Type no longer includes a needless charset param. (kirikak2)
• Replies prefix subject with "Re: " instead of "RE: " per 5322 3.6.5. (mashedcode)
• Gracefully handle multiple, possibly-invalid headers for what should be singular fields. (rosa)
• SMTP delivery with enable_tls/starttls/starttls_auto: false now disables these options, since starttls is now :auto by default in upstream net-smtp. (jeremy)

Features:

• Message#inspect_structure and PartsList#inspect_structure pretty-print the hierarchy of message parts. (TylerRick)
• an_attachment_with_mime_type matcher added to match attachments by mime type

Bug Fixes:

• Regression: Preserve message-level charset when adding parts (related to Rails ActionMailer) @​shields
• Regression: Adding a part should not reset the mail's charset to nil @​railsbob

Please check 2-7-stable for previous changes.

Commits

• b6b6cb7 Release v2.8.1
• bbf7f91 Release 2.8.1.rc2
• 82c02d9 Add 2.8.0.1 details
• 0a65ff0 Fix section header
• 9c63d11 Fix GH-actions syntax
• cfd7833 Run tests on stable-branches
• 6cd7b84 Release 2.8.1.rc1
• 07a1cde Fix sendmail accepting string :arguments again
• c7c190f Fix sendmail accepting string :arguments again
• ea3a55f Adds Ruby 3.2 to the CI matrix
• Additional commits viewable in compare view

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