chore(jenkins): Update Jenkins plugins (#1055)

Author: gounthar

dockerfiles/plugins.txt

@@ -78,5 +78,5 @@ workflow-job:1505.vea_4b_20a_4a_495
 workflow-multibranch:803.v08103b_87c280
 workflow-scm-step:437.v05a_f66b_e5ef8
 workflow-step-api:700.v6e45cb_a_5a_a_21
-workflow-support:961.v51869f7b_d409
+workflow-support:963.va_600813d04a_a_
 ws-cleanup:0.48