Bump express from 4.19.2 to 4.20.0 in /grafana-plugin #1914

Job	Run time
Linting and tests / Lint, test, and build frontend	1m 51s
Linting and tests / Lint entire project	2m 29s
Linting and tests / Test technical documentation	19s
Linting and tests / Lint database migrations	1m 1s
Linting and tests / mypy	1m 31s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: True)	3m 16s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: False)	3m 29s
Linting and tests / Backend Tests: Plugin	37s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: True)	3m 12s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: True)	3m 6s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: False)	3m 9s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: False)	2m 50s
Linting and tests / Helm Chart Unit Tests	20s
Linting and tests / Unit tests - Migrators	23s
Snyk security scan / Snyk security scan	1m 33s
Linting and tests / Standard e2e tests (10.3.0) / Grafana: 10.3.0	8m 3s
Linting and tests / Standard e2e tests (11.2.0) / Grafana: 11.2.0	7m 55s
Linting and tests / Standard e2e tests (latest) / Grafana: latest	8m 5s
	53m 9s

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