[luhn] bump to 1.7.0 (#2171)

* [luhn] bump to 1.7.0

Bump `luhn` to latest version of the canonical data.

* bump CI

Author: yawpitch

exercises/luhn/luhn_test.py

@@ -2,7 +2,7 @@
 
 from luhn import Luhn
 
-# Tests adapted from `problem-specifications//canonical-data.json` @ v1.6.1
+# Tests adapted from `problem-specifications//canonical-data.json` @ v1.7.0
 
 
 class LuhnTest(unittest.TestCase):
@@ -27,6 +27,9 @@ def test_invalid_canadian_sin(self):
     def test_invalid_credit_card(self):
         self.assertIs(Luhn("8273 1232 7352 0569").valid(), False)
 
+    def test_invalid_long_number_with_an_even_remainder(self):
+        self.assertIs(Luhn("1 2345 6789 1234 5678 9012").valid(), False)
+
     def test_valid_number_with_an_even_number_of_digits(self):
         self.assertIs(Luhn("095 245 88").valid(), True)