chore: remove email_validator constraint

[marcuslimdw]

Description

email-validator is a transitive dependency (of WTForms), but the <2 constraint isn't actually necessary.

ADDITIONAL INFORMATION

• Has associated issue:
• Is CRUD MVC related.
• Is Auth, RBAC security related.
• Changes the security db schema.
• Introduces new feature
• Removes existing feature

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6f00efc) 79.71% compared to head (757aa98) 79.57%.
Report is 2 commits behind head on master.

❗ Current head 757aa98 differs from pull request most recent head feedc6a. Consider uploading reports for the commit feedc6a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2167      +/-   ##
==========================================
- Coverage   79.71%   79.57%   -0.15%     
==========================================
  Files          72       72              
  Lines        8990     8982       -8     
==========================================
- Hits         7166     7147      -19     
- Misses       1824     1835      +11     

Flag	Coverage Δ
python	79.57% <ø> (-0.15%)	⬇️

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