Is pgx.pool.Acquire() multithread-ready?

During debugging I have found that one of my go-routines got sutck on `pgx.pool.Acquire()` function. The thing is, I have multiple go-routines using single pool. So, the question is, is `pgx.pool` safe against deadlocks ???

I am using the pool with `CopyFrom` and `Exec`, so, `Acquire` should release any resouces if those were allocated and free the connection. But I am seening that on request number 26 I am getting blocked inside the `pool.Acquire()` function

Start with pgx.pool.Acquire() and reproduce the reported block using multiple goroutines sharing one pool with CopyFrom and Exec. Trace whether resources are released after those operations and determine why Acquire blocks around request 26. Done means documenting the concurrency behavior and, if confirmed, identifying the required fix or usage constraint.

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