Update 2 files

- /transform/sqlmesh_materia/models/staging/Commodity Exchange Codes.xls
- /transform/sqlmesh_materia/seeds/commodity_exchange_codes.csv

transform/sqlmesh_materia/seeds/commodity_exchange_codes.csv

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+Commodity Name	Exchange Code	Exchange
+Crude Oil WTI	CL	CME
+Crude Oil Brent	BZ	ICE
+Gasoline RBOB	RB	CME
+Heating Oil	HO	CME
+Natural Gas	NG	CME
+Ethanol	CU	CME
+Cocoa	CC	ICE
+Cotton	CT	ICE
+Orange Juice	FCOJ-A	ICE
+Coffee	KC	ICE
+Lumber	LBR	ICE
+Sugar	SB	ICE
+European Gas TTF	TTC	ICE
+European Union Emissions Allowance	ECF	ICE
+Gold	GC	CME
+Silver	SI	CME
+Platinum	PL	CME
+Copper	HG	CME
+Palladium	PA	CME
+Live Cattle	LE	CME
+Feeder Cattle	GF	CME
+Lean Hogs	HE	CME
+Corn	ZC	CME
+Soybean oil	ZL	CME
+Soybean meal	ZM	CME
+Oats	ZO	CME
+Rough Rice	ZR	CME
+Soybeans	ZS	CME
+Wheat	ZW	CME
+Canola	RS	ICE
+Rebar	RB	SHFE
+Hot-Rolled Coil	HC	SHFE
+Nickel	NI	SHFE
+Tin	SN	SHFE
+Aluminum	AL	SHFE
+Zinc	ZN	SHFE
+Natural Rubber	RU	SHFE
+Bitumen	BU	SHFE
+Iron Ore	I	DCE
+Palm Oil	P	DCE
+Eggs	JD	DCE
+Coking Coal	JM	DCE
+Polyvinyl Chloride (PVC)	V	DCE
+White Sugar	SR	ZCE
+Cotton	CF	ZCE
+Apple	AP	ZCE
+PTA	TA	ZCE
+Methanol	MA	ZCE
+LME Aluminum	AH	LME
+LME Copper	CA	LME
+LME Lead	PB	LME
+LME Nickel	NI	LME
+LME Tin	SN	LME
+LME Zinc	ZS	LME
+Iron Ore	TIO	SGX
+Rubber	TSR	SGX