Bump nodemailer from 2.7.2 to 6.4.15

[dependabot-preview[bot]]

Bumps nodemailer from 2.7.2 to 6.4.15.

Changelog

Sourced from nodemailer's changelog.

6.4.15 2020-11-06

• Minor changes in header key casing

6.4.14 2020-10-14

• Disabled postinstall script

6.4.13 2020-10-02

• Fix normalizeHeaderKey method for single node messages

6.4.12 2020-09-30

• Better handling of attachment filenames that include quote symbols
• Includes all information from the oath2 error response in the error message (Normal Gaussian) [1787f227]

6.4.11 2020-07-29

• Fixed escape sequence handling in address parsing

6.4.10 2020-06-17

• Fixed RFC822 output for MailComposer when using invalid content-type value. Mostly relevant if message attachments have stragne content-type values set.

6.4.7 2020-05-28

• Always set charset=utf-8 for Content-Type headers
• Catch error whn using invalid crypto.sign input

6.4.6 2020-03-20

• fix: requeueAttempts=n should requeue n times (Patrick Malouin) [a27ed2f7]

6.4.4 2020-03-01

• Add options.forceAuth for SMTP (Patrick Malouin) [a27ed2f7]

6.4.3 2020-02-22

• Added an option to specify max number of requeues when connection closes unexpectedly (Igor Sechyn) [8a927f5a]

6.4.2 2019-12-11

• Fixed bug where array item was used with a potentially empty array

6.4.1 2019-12-07

• Fix processing server output with unterminated responses

Commits

• 7e7b2b2 v6.4.15
• fca2041 Update CHANGELOG.md
• b4ccfa3 Oups
• 24b93bf Add ethereal.email to well-known/services.json
• 0f132fa doc: make the code a little more accessible with some code comments.
• 1815bad v6.4.14
• dd26ddd v6.4.13
• 455cfbe v6.4.12
• 1787f22 Includes all information from the oath2 error response in the error message (...
• e3055c4 v6.4.11
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #225.