Bump github.com/alecthomas/kong from 1.4.0 to 1.5.0 #13723

Job	Run time
Tests (mysql:5.6, mongo:4.2, postgres:14, percona/pmm-server:2.0.0)	6m 26s
Tests (mysql:5.7, mongo:4.4, postgres:15, percona/pmm-server:2.0.1)	6m 29s
Tests (mysql:8.0, mongo:4.4, postgres:16, percona/pmm-server:2.1.0)	6m 39s
Tests (mysql:8.0, mongo:4.4, postgres:17rc1, percona/pmm-server:2.2.0)	6m 25s
Tests (percona:5.6, percona/percona-server-mongodb:4.2, perconalab/percona-distribution-postgresq...	6m 56s
Tests (percona:5.7, percona/percona-server-mongodb:4.4, perconalab/percona-distribution-postgresq...	6m 46s
Tests (percona:8.0, percona/percona-server-mongodb:4.4, perconalab/percona-distribution-postgresq...	6m 54s
Tests (mariadb:10.2, mongo:4.4, postgres:12, perconalab/pmm-server:dev-latest)	6m 36s
Tests (mariadb:10.3, percona/percona-server-mongodb:4.4, postgres:13, perconalab/pmm-server:dev-l...	6m 49s
Tests (mariadb:10.4, postgres:14, perconalab/pmm-server:dev-latest)	6m 34s
	1h 6m 34s

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