Update net-smtp requirement from ~> 0.3.1 to ~> 0.4.0

[dependabot]

Updates the requirements on net-smtp to permit the latest version.

Release notes

Sourced from net-smtp's releases.

v0.4.0

What's Changed

• Adds Ruby 3.1 and 3.2 to the CI matrix. by @​petergoldstein in ruby/net-smtp#50
• Revert "Replace Timeout.timeout with socket timeout" by @​hsbt in ruby/net-smtp#51
• add Net::SMTP::Authenticator class and auth_* methods are separated from the Net::SMTP class. by @​tmtm in ruby/net-smtp#53
• fix typo by @​tmtm in ruby/net-smtp#54
• Add SMTPUTF8 support by @​arnt in ruby/net-smtp#49
• Fix: send_message() with recipients as array by @​tmtm in ruby/net-smtp#55
• Fixed issue sending emails to unaffected recipients on 53x error by @​tmtm in ruby/net-smtp#56
• Removed unnecessary Subversion keywords by @​tmtm in ruby/net-smtp#57
• refactor test code by @​tmtm in ruby/net-smtp#58
• The mailfrom method's arguments restored. by @​tmtm in ruby/net-smtp#59
• Bump actions/checkout from 3 to 4 by @​dependabot in ruby/net-smtp#60
• remove SMTPUTF8RequiredError by @​tmtm in ruby/net-smtp#61
• v0.4.0 by @​tmtm in ruby/net-smtp#62

New Contributors

• @​petergoldstein made their first contribution in ruby/net-smtp#50
• @​arnt made their first contribution in ruby/net-smtp#49

Full Changelog: ruby/net-smtp@v0.3.3...v0.4.0

Changelog

Sourced from net-smtp's changelog.

Version 0.4.0 (2023-09-20)

Improvements

• add Net::SMTP::Authenticator class and auth_* methods are separated from the Net::SMTP class. ruby/net-smtp#53 This allows you to add a new authentication method to Net::SMTP. Create a class with an auth method that inherits Net::SMTP::Authenticator. The auth method has two arguments, user and secret. Send an instruction to the SMTP server by using the continue or finish method. For more information, see lib/net/smtp/auto _*.rb.
• Add SMTPUTF8 support ruby/net-smtp#49

Fixes

• Revert "Replace Timeout.timeout with socket timeout" ruby/net-smtp#51
• Fixed issue sending emails to unaffected recipients on 53x error ruby/net-smtp#56

Others

• Removed unnecessary Subversion keywords ruby/net-smtp#57

Version 0.3.3 (2022-10-29)

• No timeout library required ruby/net-smtp#44
• Make the digest library optional ruby/net-smtp#45

Version 0.3.2 (2022-09-28)

• Make exception API compatible with what Ruby expects ruby/net-smtp#42

Version 0.3.1 (2021-12-12)

Improvements

• add Net::SMTP::Address.
• add Net::SMTP#capable? and Net::SMTP#capabilities.
• add Net::SMTP#tls_verify, Net::SMTP#tls_hostname, Net::SMTP#ssl_context_params

Version 0.3.0 (2021-10-14)

Improvements

• Add tls, starttls keyword arguments.

  # always use TLS connection for port 465.
  Net::SMTP.start(hostname, 465, tls: true)
  do not use starttls for localhost
  Net::SMTP.start('localhost', starttls: false)

... (truncated)

Commits

• bf27727 Merge pull request #62 from ruby/v0-4-0
• d2e381f v0.4.0
• 165c704 chore
• 531c797 Merge pull request #61 from ruby/remove_SMTPUTF8RequiredError
• 83c1587 remove SMTPUTF8RequiredError
• 8d40ff2 Merge pull request #60 from ruby/dependabot/github_actions/actions/checkout-4
• c9b35e6 Bump actions/checkout from 3 to 4
• 0d89827 Merge pull request #59 from ruby/mailfrom
• 40ed06d The mailfrom method's arguments restored.
• cc51054 Merge pull request #58 from ruby/refactor-test
• Additional commits viewable in compare view

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[mvz]

@dependabot rebase