[Keyboard] `dactyl_manuform/6x7` pin correction (#21240)

keyboards/handwired/dactyl_manuform/6x7/info.json

@@ -23,7 +23,7 @@
         "pin": "D3"
     },
     "matrix_pins": {
-        "cols": ["D4", "C6", "D7", "E6", "B4", "B5", "B7"],
+        "cols": ["D4", "C6", "D7", "E6", "B4", "B5", "D1"],
         "rows": ["F5", "F6", "F7", "B1", "B3", "B2", "B6"]
     },
     "diode_direction": "COL2ROW",