chore(deps-dev): Bump express from 4.21.0 to 4.21.2 in /ui #180

Job	Run time
unit_tests	3m 38s
validate	4m 8s
Build (Go 1.19)	36s
Build (Go 1.20)	28s
Build (Go 1.21)	21s
Build (Go 1.22)	28s
Build (Go 1.23)	23s
Podman Tests	1h 0m 22s
No-Cluster Tests	1m 7s
K8s Tests (v1.31.0/ServiceBinding=false)	1h 13m 58s
OpenShift Tests	0s
K8s Tests (v1.30.4/ServiceBinding=false)	1h 14m 59s
K8s Tests (v1.29.8/ServiceBinding=false)	1h 15m 27s
K8s Tests (v1.28.13/ServiceBinding=false)	1h 14m 13s
K8s Tests (v1.27.16/ServiceBinding=false)	1h 13m 59s
K8s Tests (v1.26.15/ServiceBinding=false)	1h 14m 48s
	8h 38m 55s

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