[Keyboard] Increase kinesis/kint41 unselect delay

Fixes qmk#18014

keyboards/kinesis/kint41/kint41.c

@@ -47,7 +47,10 @@ void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
     // Empirically: e.g. 5μs is not enough, will result in keys that don’t work
     // and ghost key presses. 10μs seems to work well.
 
+    // On some variants of the hardware, 20us seems to be required. This was found
+    // on a combination of KB600LF+stapelberg v2020-06-30+teensy41.
+
     // 600 cycles at 0.6 cycles/ns == 1μs
     const uint32_t cycles_per_us = 600;
-    delay_inline(10 * cycles_per_us);
+    delay_inline(20 * cycles_per_us);
 }