Bump email-validator from 1.1.3 to 1.2.1 in /{{cookiecutter.app_name}}/requirements

[dependabot]

Bumps email-validator from 1.1.3 to 1.2.1.

Release notes

Sourced from email-validator's releases.

v1.2.1

Changes in version 1.2.0:

• Rejecting domains with NULL MX records (when deliverability checks are turned on).
• Rejecting unsafe unicode characters. (Some of these checks you should be doing on all of your user inputs already!)
• Rejecting most special-use reserved domain names. A new test_environment option is added for using @*.test domains.
• Some fixes in the tests.

In version 1.2.1:

• example and example.com/net/org are removed from the special-use domains list.
• SPECIAL_USE_DOMAIN_NAMES is now a documented part of the API (and it is a list instead of a tuple)
• New module-level attributes ALLOW_SMTPUTF8, CHECK_DELIVERABILITY, TEST_ENVIRONMENT, and DEFAULT_TIMEOUT can be used to change the default values of the keyword arguments.
• Travis CI is updated to test from Python 3.6 forward, dropping 3.5.

Commits

• 95deaf8 Version 1.2.1
• e92e395 Add a note in the README about rejecting (comment) syntax
• dab623f Update pinned packages in test_requirements.txt
• 8102431 Rename some constants that were poorly named
• d64b291 Create module attributes to set global default values for keyword argument op...
• 91aa260 Document how to modify SPECIAL_USE_DOMAIN_NAMES
• 9d7d02a Remove example and example.com/net/org from the special use domains list
• 2bd672f Release version 1.2.0
• 8f4cf00 Use a caching resolver when checking email addresses in bulk on the command line
• 4d4fa72 Remove redundant import, fixes #68
• Additional commits viewable in compare view

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[dependabot]

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