Bump nodemailer from 6.4.10 to 6.4.16 in /using nodemailer for 2 way authentication

[dependabot[bot]]

Bumps nodemailer from 6.4.10 to 6.4.16.

Changelog

Sourced from nodemailer's changelog.

6.4.16 2020-11-12

• Applied updated prettier formating rules

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

Commits

• ba31c64 v6.4.16
• 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 (...
• Additional commits viewable in compare view

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