fix(isMobilePhone): update de-DE regex to exclude landline numbers (#1868)

* revert #1391

* remove invalid number blocks

Author: thomaschaaf

src/lib/isMobilePhone.js

@@ -26,7 +26,7 @@ const phones = {
   'ca-AD': /^(\+376)?[346]\d{5}$/,
   'cs-CZ': /^(\+?420)? ?[1-9][0-9]{2} ?[0-9]{3} ?[0-9]{3}$/,
   'da-DK': /^(\+?45)?\s?\d{2}\s?\d{2}\s?\d{2}\s?\d{2}$/,
-  'de-DE': /^((\+49|0)[1|3])([0|5][0-45-9]\d|6([23]|0\d?)|7([0-57-9]|6\d))\d{7,9}$/,
+  'de-DE': /^((\+49|0)1)(5[0-25-9]\d|6([23]|0\d?)|7([0-57-9]|6\d))\d{7,9}$/,
   'de-AT': /^(\+43|0)\d{1,4}\d{3,12}$/,
   'de-CH': /^(\+41|0)([1-9])\d{1,9}$/,
   'de-LU': /^(\+352)?((6\d1)\d{6})$/,

test/validators.js

@@ -6207,7 +6207,6 @@ describe('Validators', () => {
         locale: 'de-DE',
         valid: [
           '+4915123456789',
-          '+4930405044550',
           '015123456789',
           '015123456789',
           '015623456789',
@@ -6218,10 +6217,9 @@ describe('Validators', () => {
           '01631234567',
           '01701234567',
           '017612345678',
-          '015345678910',
-          '015412345678',
         ],
         invalid: [
+          '+4930405044550',
           '34412345678',
           '14412345678',
           '16212345678',
@@ -6230,6 +6228,8 @@ describe('Validators', () => {
           '17012345678',
           '+4912345678910',
           '+49015123456789',
+          '015345678910',
+          '015412345678',
         ],
       },
       {