Remove `throw error as! Failure` TaskLocal adopts typed throws

[kukushechkin]

Swift issue swiftlang/swift#75520

The code in question:

public func withLogger<Result, Failure: Error>(
    _ logger: Logger,
    _ operation: (Logger) throws(Failure) -> Result
) throws(Failure) -> Result {
    do {
        return try Logger.withTaskLocalLogger(logger) {
            try operation(logger)
        }
    } catch {
        throw error as! Failure
    }
}