[Snyk] Security upgrade nodemailer from 6.7.5 to 6.9.9

[FlorentinTh]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	658/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-NODEMAILER-6219989	No	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: nodemailer

The new version differs by 51 commits.

• 5a2e10f chore(master): release 6.9.9 [skip-ci] (#1606)
• dd8f5e8 fix(security): Fix issues described in GHSA-9h6g-pr28-7cqp. Do not use eternal matching pattern if only a few occurences are expected
• 2c2b46a chore: do not use caret in version specifier
• be45c1b fix(tests): Use native node test runner, added code coverage support, removed grunt (#1604)
• 4233f6f chore(master): release 6.9.8 [skip-ci] (#1605)
• 09d502f chore: removed double file
• b4d0e0c fix(punycode): do not use native punycode module
• 8376c02 Test new github notice syntax for README
• bc46a3b Updated stale github action
• 78bdaf8 chore: remove redundant AWS SDK for JavaScript v2 (#1593)
• 971ced7 chore: add mailcatch.app to well-known/services.json (#1586)
• 879e562 chore(master): release 6.9.7 [skip-ci] (#1585)
• 140e3b0 Merge branch 'master' of github.com:nodemailer/nodemailer
• 41d482c fix(customAuth): Do not require user and pass to be set for custom authentication schemes (fixes #1584)
• 20e9fe0 update - `services.json` - add SES SMTP endpoints for the AP region (#1580)
• 9da77b6 chore(master): release 6.9.6 [skip-ci] (#1578)
• 7fe0a60 fix(tests): Removed Node v12 from test matrix as it is not compatible with the test framework anymore
• db32c93 fix(inline): Use 'inline' as the default Content Dispostion value for embedded images
• fdc7c27 chore(master): release 6.9.5 [skip-ci] (#1573)
• da4744e fix(license): Updated license year
• 13672b2 Removed legacy files (#1571)
• afd2287 Added release workflow to publish npm packages from Github
• 1ae83a2 Update services.json
• 286dc28 v6.9.4

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