fix(isMobilePhone): fix bn-BD locale prefixes (#913)

Author: Mostafa Kamal

src/lib/isMobilePhone.js

@@ -13,7 +13,7 @@ const phones = {
   'ar-TN': /^(\+?216)?[2459]\d{7}$/,
   'be-BY': /^(\+?375)?(24|25|29|33|44)\d{7}$/,
   'bg-BG': /^(\+?359|0)?8[789]\d{7}$/,
-  'bn-BD': /\+?(88)?0?1[156789][0-9]{8}\b/,
+  'bn-BD': /\+?(88)?0?1[356789][0-9]{8}\b/,
   'cs-CZ': /^(\+?420)? ?[1-9][0-9]{2} ?[0-9]{3} ?[0-9]{3}$/,
   'da-DK': /^(\+?45)?\s?\d{2}\s?\d{2}\s?\d{2}\s?\d{2}$/,
   'de-DE': /^(\+?49[ \.\-]?)?([\(]{1}[0-9]{1,6}[\)])?([0-9 \.\-\/]{3,20})((x|ext|extension)[ ]?[0-9]{1,4})?$/,

test/validators.js

@@ -3507,7 +3507,7 @@ describe('Validators', () => {
         locale: 'bn-BD',
         valid: [
           '+8801794626846',
-          '01199098893',
+          '01399098893',
           '8801671163269',
           '01717112029',
         ],