Decimal IPs are also not dotted-quad

Per JSON Schema spec, only dotted-quad ips are allowed in ipv4 format.

The tests verified that hex format is not valid here, but they didn't
do the same for decimal format.

Added that missing test.

2130706433 == 0x7f000001 == 127.0.0.1

Author: ChALkeR

tests/draft2019-09/optional/format/ipv4.json

@@ -27,6 +27,11 @@
                 "description": "an IP address as an integer",
                 "data": "0x7f000001",
                 "valid": false
+            },
+            {
+                "description": "an IP address as an integer (decimal)",
+                "data": "2130706433",
+                "valid": false
             }
         ]
     }

tests/draft4/optional/format/ipv4.json

@@ -27,6 +27,11 @@
                 "description": "an IP address as an integer",
                 "data": "0x7f000001",
                 "valid": false
+            },
+            {
+                "description": "an IP address as an integer (decimal)",
+                "data": "2130706433",
+                "valid": false
             }
         ]
     }

tests/draft6/optional/format/ipv4.json

@@ -27,6 +27,11 @@
                 "description": "an IP address as an integer",
                 "data": "0x7f000001",
                 "valid": false
+            },
+            {
+                "description": "an IP address as an integer (decimal)",
+                "data": "2130706433",
+                "valid": false
             }
         ]
     }

tests/draft7/optional/format/ipv4.json

@@ -27,6 +27,11 @@
                 "description": "an IP address as an integer",
                 "data": "0x7f000001",
                 "valid": false
+            },
+            {
+                "description": "an IP address as an integer (decimal)",
+                "data": "2130706433",
+                "valid": false
             }
         ]
     }