Update sqlx dependencies to version 0.6.49-beta.5 in Cargo.toml and C… #1745

Job	Run time
compile_and_lint	2m 40s
test (mssql, mssql, mssql://root:[email protected]/sqlpage)	2m 55s
test (mysql, mysql, mysql://root:[email protected]/sqlpage)	2m 27s
docker_build (linux/arm/v7)	8m 55s
test (postgres, postgres, postgres://root:[email protected]/sqlpage)	3m 34s
test (odbc, postgres, Driver={PostgreSQL Unicode};Server=127.0.0.1;Port=5432;Database=sqlpage;UID...	4m 27s
docker_build (linux/amd64)	8m 33s
windows_test	3m 47s
docker_build (linux/arm64)	9m 0s
docker_push	18s
	46m 36s

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