add blackwells (#720)

Co-authored-by: Tachibana Kanade <[email protected]>

Author: homsar

quirks/change-password-URLs.json

@@ -75,6 +75,7 @@
     "bestbuy.com": "https://www.bestbuy.com/identity/accountSettings/page/password",
     "biblegateway.com": "https://www.biblegateway.com/user/account/",
     "birkenstock.com": "https://www.birkenstock.com/profile",
+    "blackwells.co.uk": "https://blackwells.co.uk/bookshop/account/personal-details",
     "blend.io": "https://blend.io/settings",
     "blockchain.com": "https://login.blockchain.com/en/#/security-center/advanced",
     "bloomberg.com": "https://www.bloomberg.com/portal/account",

quirks/password-rules.json

@@ -137,6 +137,9 @@
     "bitly.com": {
         "password-rules": "minlength: 6; required: lower; required: upper; required: digit; required: [`!@#$%^&*()+~{}'\";:<>?]];"
     },
+    "blackwells.co.uk": {
+        "password-rules": "minlength: 8; maxlength: 30; allowed: upper,lower,digit;"
+    },
     "bloomingdales.com": {
         "password-rules": "minlength: 7; maxlength: 16; required: lower, upper; required: digit; required: [`!@#$%^&*()+~{}'\";:<>?]];"
     },