Loosen thermistor table size limit

Co-Authored-By: Aaron Griffith <aargri@gmail.com>

Marlin/src/module/thermistor/thermistors.h

@@ -203,8 +203,8 @@
 #endif
 
 // The SCAN_THERMISTOR_TABLE macro needs alteration?
-static_assert(HEATER_0_TEMPTABLE_LEN < 128 && HEATER_1_TEMPTABLE_LEN < 128 && HEATER_2_TEMPTABLE_LEN < 128 && HEATER_3_TEMPTABLE_LEN < 128 && HEATER_4_TEMPTABLE_LEN < 128 && BEDTEMPTABLE_LEN < 128 && CHAMBERTEMPTABLE_LEN < 128,
-  "Temperature conversion tables over 127 entries need special consideration."
+static_assert(HEATER_0_TEMPTABLE_LEN < 256 && HEATER_1_TEMPTABLE_LEN < 256 && HEATER_2_TEMPTABLE_LEN < 256 && HEATER_3_TEMPTABLE_LEN < 256 && HEATER_4_TEMPTABLE_LEN < 256 && BEDTEMPTABLE_LEN < 256 && CHAMBERTEMPTABLE_LEN < 256,
+  "Temperature conversion tables over 255 entries need special consideration."
 );
 
 // Set the high and low raw values for the heaters