Bump MailKit from 2.15.0 to 3.4.1

[dependabot]

Bumps MailKit from 2.15.0 to 3.4.1.

Changelog

Sourced from MailKit's changelog.

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.
• Added support for net462.

MailKit 3.2.0 (2022-03-26)

• Do not use ApplicationProtocols with SSL. (issue #1352)
• Updated GMail, Yahoo, and Outlook.com certificates.
• Lazy-initialize MessageSummary.Keywords. This reduces memory usage when the client isn't requesting Flags/Keywords.
• Hard-cache some IMAP FETCH-related tokens in order to relieve GC pressure for commands like FETCH where there can be a LOT of responses containing the same tokens over and over again.
• Converted some IMAP async Task methods to use ValueTask to reduce GC pressure.
• Reduced string allocations in the IMAP logic by avoiding use of ToUpperInvariant().
• Added non-async implementations for ImapStream APIs to be used by the synchronous public APIs to avoid some async overhead.
• Reduce MemoryStream (and thus byte[]) allocations by using a new ByteArrayBuilder.
• Rewrote the IMAP CAPABILITY parser to avoid allocating strings.
• Fixed some cases where IMAP NIL tokens were not compared case insensitively.
• Always include the VERSION block in NTLM messages. (issue #1340)
• Target .NET Framework v4.6.1 instead of v4.6 to match the changes in MimeKit.
• Capture the Socket timeout value in Read/WriteAsync() to have it in case of exceptions. (issue #1327)

... (truncated)

Commits

• 1cfbf50 Bumped version to 3.4.1
• 9dd481b bumped MimeKit to version 3.4.1
• a433619 Updated GMail SSL certificates
• c9927f9 Removed Mono.Data.Sqlite dependency from the Unit Tests
• 6c9ade2 bumped MimeKit
• b72a592 Update README.md
• cb2bc86 Improved docs for ImapFolderConstructorArgs
• d6e6839 Update main.yml
• ef3241d Update main.yml
• bea9a9e Updated test.ps1
• Additional commits viewable in compare view

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[dependabot]

Superseded by #149.