Reduce logs from sqlx-sqlite

[kwannoel]

Many logs of this sort are emitted when cluster is idle:

2024-02-08T09:03:02.214900053Z  INFO sqlx-sqlite-worker-0 sqlx::query: summary=“INSERT INTO \“hummock_version_delta\” (\“id\“, …” db.statement=“\n\nINSERT INTO\n  \“hummock_version_delta\” (\n    \“id\“,\n    \“prev_id\“,\n    \“max_committed_epoch\“,\n    \“safe_epoch\“,\n    \“trivial_move\“,\n    \“full_version_delta\“\n  )\nVALUES\n  (?, ?, ?, ?, ?, ?) ON CONFLICT (\“id\“) DO\nUPDATE\nSET\n  \“prev_id\” = \“excluded\“.\“prev_id\“,\n  \“max_committed_epoch\” = \“excluded\“.\“max_committed_epoch\“,\n  \“safe_epoch\” = \“excluded\“.\“safe_epoch\“,\n  \“trivial_move\” = \“excluded\“.\“trivial_move\“,\n  \“full_version_delta\” = \“excluded\“.\“full_version_delta\“\n” rows_affected=1 rows_returned=0 elapsed=119.562µs

[kwannoel]

Jsut need to:

1. https://docs.rs/sea-orm/latest/sea_orm/struct.ConnectOptions.html#method.get_sqlx_logging change the log level.
   Can be done in src/meta/node/src/server.rs.
2. We can use RUST_LOG to configure the log level for sqlx logging.