Added Cred Card Number and CVV support

[heberholanda]

At Faker.js has:

• faker.finance.creditCardNumber -> $randomCreditCardNumber
• faker.finance.creditCardCVV -> $randomCreditCardCVV

postman-docs link: https://github.com/postmanlabs/postman-docs/pull/3383

[codecov[bot]]

Codecov Report

Merging #1218 (c871205) into develop (dbcf65b) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##           develop     #1218   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           37        37           
  Lines         2161      2161           
  Branches       660       660           
=========================================
  Hits          2161      2161           

Flag	Coverage Δ
unit	100.00% <ø> (ø)

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Impacted Files	Coverage Δ
lib/superstring/dynamic-variables.js	100.00% <ø> (ø)

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