Bump github.com/vektra/mockery/v2 from 2.49.0 to 2.50.0 in /tools #14052

Job	Run time
Tests (mysql:5.6, mongo:4.2, postgres:14, percona/pmm-server:2.0.0)	3m 31s
Tests (mysql:5.7, mongo:4.4, postgres:15, percona/pmm-server:2.0.1)	3m 34s
Tests (mysql:8.0, mongo:4.4, postgres:16, percona/pmm-server:2.1.0)	3m 30s
Tests (mysql:8.0, mongo:4.4, postgres:17rc1, percona/pmm-server:2.2.0)	3m 36s
Tests (percona:5.6, percona/percona-server-mongodb:4.2, perconalab/percona-distribution-postgresq...	3m 52s
Tests (percona:5.7, percona/percona-server-mongodb:4.4, perconalab/percona-distribution-postgresq...	3m 50s
Tests (percona:8.0, percona/percona-server-mongodb:4.4, perconalab/percona-distribution-postgresq...	3m 53s
Tests (mariadb:10.2, mongo:4.4, postgres:12, perconalab/pmm-server:dev-latest)	3m 35s
Tests (mariadb:10.3, percona/percona-server-mongodb:4.4, postgres:13, perconalab/pmm-server:dev-l...	3m 40s
Tests (mariadb:10.4, postgres:14, perconalab/pmm-server:dev-latest)	3m 51s
	36m 52s

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