Bump MailKit from 3.4.1 to 4.2.0 in /Framework

[dependabot[bot]]

Bumps MailKit from 3.4.1 to 4.2.0.

Changelog

Sourced from MailKit's changelog.

MailKit 4.2.0 (2023-09-02)

• Fixed a bug where the HttpProxyClient and HttpsProxyClient could end up reading the mail server greeting, causing a connection failure for the ImapClient/Pop3Client/SmtpClient. (issue #1603)
• Parse IMAP quota values as ulongs instead of uints for GMail compatibility. (issue #1602)
• Added support for decoding SMTP DATA to the SmtpDataFilter. (issue #1607)
• Added a Pop3Client.Size property. (issue #1623)
• Refactored more ImapClient commands to split sync/async implementations in order to improve performance and reduce GC pressure. (issue #1335)
• Added new IMailFolder.GetStream() methods that just take a uid/index and a BodyPart.
• Added IMailFolder.GetStream/Async() methods that just take a uid or index.
• Improved initial List<IMessageSummary> capacity estimation for Fetch (IList<UniqueId>, ...).
• Fixed ByteArrayBuilder.TrimNewLine() to check array bounds properly. (issue #1634)

MailKit 4.1.0 (2023-06-17)

• Fixed queueing logic for pipelining SMTP and POP3 commands. (issue #1568)
• Improve SslHandshakeException diagnostic messages. (issue #1554)
• Bumped System.Formats.Asn1 dependency to 7.0.0.
• Bumped MimeKit dependency to 4.1.0.

MailKit 4.0.0 (2023-04-15)

• Marked the AccessRight and UniqueId structs as readonly.
• Fixed POP3 client logic to calculate the needed bytes before converting commands into into the output buffer.
• Ported to MimeKit v4.0 and BouncyCastle v2.1.1.

MailKit 3.6.0 (2023-03-04)

• Decrement ImapFolder.Count when ImapClient receives an untagged EXPUNGE notification and emit a CountChanged event. (issue #1509)
• Avoid using the NAMESPACE command for Exchange 2003. (issue #1512)
• Added support for rfc8970 (IMAP4 Extension: Message Preview Generation).

MailKit 3.5.0 (2023-01-27)

• Fixed bitmasking logic in SmtpClient.cs for deciding whether to use the BDAT command.
• Fixed HttpProxyClient to call GetConnectCommand() before connecting a socket to prevent memory leaks when connecting fails.
• Improved the IMAP BODYSTRUCTURE parser to better handle broken responses.
• Fixed bug in Envelope.Parse/TryParse when given (NIL NIL "" "localhost") (issue #1471)
• Fixed SMTP client logic to calculate the needed bytes before converting commands into into the output buffer.

... (truncated)

Commits

• e180477 bumped version to 4.2.0
• 988c22a Updated test.ps1
• cf29bff bumped MimeKit
• a73747d Filter out MimeKit from test coverage
• 7452e61 Update main.yml
• 91326cc Make the switch to AltCover
• 70d6482 Fixed ByteArrayBuilder.TrimNewLine() to check array bounds properly
• e84d570 Improved the ImapBodyPartExamples
• e659e62 bumped MimeKit dependency for a few optimizations
• a4d4437 fixed comments in ImapEngine.cs
• Additional commits viewable in compare view

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