Memory bloating

[Demayl]

After using more connections, the memory is not reclaimed. Tried using pure DBIish and it works well.
Here is an example script using the two approaches

#!/usr/bin/env raku
use DBIish;
use DBIish::Pool;
use Telemetry;

my $driver       = 'mysql';
my $database = 'database';
my $user          = 'someuser';
my $password = '1234';


# PURE DBIish
sub connect {
    DBIish.connect( $driver, :$database, :$user, :$password, :RaiseError );
}

sub disconnect( $conn ) {
    $conn.dispose();
}

for ^20000 {
    my $conn = connect();
    $conn.execute("SELECT 1");

    if $_ %% 100 {
        my $mem = T<max-rss> / 1024;
       $mem.=round(0.01);
       say $_ ~ " $mem";

       sleep 0.005;
    }

    $conn.dispose();
}

# DBIish::Pool

my %connection-parameters = :$database, :$user, :$password;
my $pool = DBIish::Pool.new(:$driver, initial-size => 5, max-connections => 10, min-spare-connections => 1, max-idle-duration => Duration.new(60), |%connection-parameters);



for ^20000 {
    my $dbh = $pool.get-connection();
   $dbh.execute('SELECT 1');

    if $_ %% 100 {
        my $mem = T<max-rss> / 1024;
       $mem.=round(0.01);

        say $_ ~ " $mem =";
       sleep 0.005;
    }

    $dbh.dispose;
}

say "END";