monitoring update to 61.2.0-bb.4

Closes big-bang/product/packages/monitoring#242 and big-bang/product/packages/monitoring#245

See merge request !4890

(cherry picked from commit f4973694)

0d1926df Updated monitoring git tag
927d8e03 remove duplicate imagePullSecrets

Co-authored-by: Michael Martin <michaelmartin@seed-innovations.com>