Fix mbtiles validate uppercase hash #1933

Job	Run time
Build x86_64-unknown-linux-gnu	21m 15s
Build x86_64-pc-windows-msvc	21m 55s
Build x86_64-apple-darwin	11m 31s
Build aarch64-apple-darwin	12m 0s
Test & package x86_64-unknown-linux-gnu	11m 0s
Test & package x86_64-pc-windows-msvc	1m 32s
Test Legacy DB (postgis/postgis:11-3.0-alpine, postgres, disable)	10m 1s
Test & package x86_64-apple-darwin	4m 29s
Test Legacy DB (postgis/postgis:14-3.3-alpine, postgres, disable)	9m 11s
Test & package aarch64-apple-darwin	11s
Test Legacy DB (postgis/postgis:15-3.3, postgres -c ssl=on -c ssl_cert_file=/etc/ssl/certs/ssl-ce...	11m 1s
	1h 54m 6s

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