i915: Update Xe3LPD DMC to v2.20

Release info:
    Xe3LPD FW 2.20

    Date : 02/25/2025
    Notes:
 
    1. Diverged firmware for Bstep release
                                           

Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>

WHENCE

@@ -5324,7 +5324,7 @@ File: i915/xe2lpd_dmc.bin
 Version: DMC API/APB ver 2 release 28 for Xe2LPD
 
 File: i915/xe3lpd_dmc.bin
-Version: DMC API/APB ver 2 release 17 for Xe3LPD
+Version: DMC API/APB ver 2 release 20 for Xe3LPD
 
 License: Redistributable. See LICENSE.i915 for details
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