VW MQB: add missing FW 2021 TROC MK1 (#27774)

I setup my C3 on this TROC to get FW.
Route name：0bbe367c98fa1538|2023-04-01--10-24-01--0
old-commit-hash: ef06780e3c

selfdrive/car/volkswagen/values.py

@@ -837,9 +837,11 @@ FW_VERSIONS = {
       b'\xf1\x8705E906018AT\xf1\x899640',
     ],
     (Ecu.transmission, 0x7e1, None): [
+      b'\xf1\x870CW300050J \xf1\x891911',
       b'\xf1\x870CW300051M \xf1\x891925',
     ],
     (Ecu.srs, 0x715, None): [
+      b'\xf1\x875Q0959655BT\xf1\x890403\xf1\x82\x1311110012333300314240681152119333463100',
       b'\xf1\x875Q0959655CG\xf1\x890421\xf1\x82\x13111100123333003142404M1152119333613100',
     ],
     (Ecu.eps, 0x712, None): [