Can't add schema name to query in fetch function

[sihcpro]

I got a problem when I try to add schema name to the query. My code:

dbpool = app.config["pool"]
async with dbpool.acquire() as conn:
    sql = """
        SELECT _id, name, address
        FROM "{schema}".account
        WHERE _id IN (
            SELECT account_id
            FROM "{schema}"."account-message"
            WHERE message_id IN (
                SELECT _id
                FROM "{schema}".message
                WHERE sender = $1
            )
        );
    """.format(
        schema=config.SCHEMA
    )
    resp = await conn.fetch(sql, address)

and it work very well, except for the lint:security give me a security issue:

Issue: [B608:hardcoded_sql_expressions] Possible SQL injection vector through string-based query construction.

And when I try to pass my schema name to conn.fetch() function but it didn't work. Can you help me?