Bump MailKit from 2.15.0 to 3.4.2

[dependabot]

Bumps MailKit from 2.15.0 to 3.4.2.

Changelog

Sourced from MailKit's changelog.

MailKit 3.4.2 (2022-10-24)

• Fixed fetching of MessageSummaryItems.PreviewText if the octet count of the message body is 0. (issue #1430)
• Modified ImapFolder.Search(SearchOptions.None, query) work the same as ImapFolder.Search(query). (issue #1437)
• Improved performance of SmtpClient by reducing memory allocations and pipelining the DATA command when the PIPELINING extension is available.
• Refactored sync and async SmtpClient APIs such that the synchronous APIs no longer call methods marked with async in order to reduce AsyncMethodBuilder state machines/allocations.
• Modified SmtpClient to only send the ORCPT argument to RCPT TO if NOTIFY is specified.
• Improved performance of Pop3Client by reducing memory allocations.
• Refactored sync and async Pop3Client APIs such that the synchronous APIs no longer call methods marked with async in order to reduce AsyncMethodBuilder state machines/allocations.
• Improved IMAP's BODY/BODYSTRUCTURE parser to be able to scan ahead multiple tokens in order to better handle syntactically incorrect responses in a more graceful way. (issue #1446)
• Improved IMAP's ENVELOPE parser to handle ("Microsoft Exchange Server" NIL NIL ".MISSING-HOST-NAME.") in a more graceful way. (issue #1451)

MailKit 3.4.1 (2022-09-12)

• Reverted the socket connection change to allow Socket.Connect() to do DNS lookups for us. Turns out, Socket.Connect() doesn't iterate over all returned IP addresses until it finds an IP address that it can successfully connect to for a given hostname which is what we need to do.

MailKit 3.4.0 (2022-09-05)

• Fixed a bug that caused ImapFolder.Fetch/FetchAsync to throw TaskCanceledException instead of allowing the correct exception to bubble up. (issue #1415)
• Simplified socket connection logic to allow Socket.Connect() to do DNS lookups for us.
• Updated common mail server SSL certificates.
• Dropped net5.0 support.

MailKit 3.3.0 (2022-06-11)

• Added work-around for IMAP BODYSTRUCTURE responses that have a NIL multipart body. (issue #1393)
• Considerably reduced memory overhead from compiler-generated async/await Tasks allocations in the IMAP implementation (mostly focused on FETCH commands/responses). (issue #1335)
• Optimized FETCH response processing for the common case where FETCH responses are returned in sorted order.
• Fixed the IMAP Literal string reader to use UTF-8 with fallback to iso-8859-1 (previously just used iso-8859-1).
• Modified the IMAP ENVELOPE parser to combine ENVELOPE mailbox tokens if there are more than 4. (issue #1369)
• Prevent TypeLoadExceptions in the SmtpClient static .ctor by catching NotSupportedExceptions thrown by IPGlobalProperties.GetIPGlobalProperties() on platforms like WASM. (issue #1381)
• Updated Google, GMX, and Yahoo! Mail SSL certificates.
• Dropped support for net452 and net461.

... (truncated)

Commits

• 8e1af5a Bumped version to 3.4.2
• 316e7f8 bumped MimeKit to 3.4.2
• c5b89d6 Improve handling of ENVELOPE mailboxes with a NIL local-part and .MISSING-HOS...
• b669fdc Simplify the previous fix. We don't need a tuple at all.
• 24fffc5 When parsing BODY/BODYSTRUCTURE, scan ahead when first few tokens are NIL
• eda1a65 Bump Microsoft.NET.Test.Sdk from 17.3.1 to 17.3.2
• 1a90818 Added unit tests for Pop3Client.GetMessage/Headers/Async() parse exceptions
• 9491424 Added more Pop3Client unit tests for LANG and UIDL probing
• 51a6175 Added more unit test coverage for Pop3Client.EnableUTF8/Async()
• abcfc6b Removed dead code in Pop3Client
• Additional commits viewable in compare view

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[dependabot]

Superseded by #161.