chore(jenkins): Update Jenkins plugins (#769)

Author: gounthar

dockerfiles/plugins.txt

@@ -33,8 +33,8 @@ javax-mail-api:1.6.2-10
 jaxb:2.3.9-1
 jjwt-api:0.11.5-112.ve82dfb_224b_a_d
 jquery3-api:3.7.1-2
-junit:1307.vdd5b_2646279e
-locale:544.v5ee877a_46b_90
+junit:1309.v0078b_fecd6ed
+locale:546.v1609030511ca_
 mailer:489.vd4b_25144138f
 matrix-auth:3.2.3
 matrix-project:840.v812f627cb_578
@@ -73,8 +73,8 @@ workflow-aggregator:600.vb_57cdd26fdd7
 workflow-api:1336.vee415d95c521
 workflow-basic-steps:1058.vcb_fc1e3a_21a_9
 workflow-cps:3990.vd281dd77a_388
-workflow-durable-task-step:1371.vb_7cec8f3b_95e
-workflow-job:1460.v28178c1ef6e6
+workflow-durable-task-step:1378.v6a_3e903058a_3
+workflow-job:1468.vcf4f5ee92395
 workflow-multibranch:795.ve0cb_1f45ca_9a_
 workflow-scm-step:427.v4ca_6512e7df1
 workflow-step-api:678.v3ee58b_469476