chore(docker): add packages/utils to app and realtime Dockerfiles (#4… #14955

Job	Run time
Detect Version	4s
Test and Build / Test and Build	47s
Check Docs Changes	-1s
Build ARM64 (GHCR Only)	0s
Build Dev ECR	0s
Migrate Dev DB	0s
Build AMD64 (./docker/app.Dockerfile, ghcr.io/simstudioai/simstudio, ECR_APP)	5m 27s
Build AMD64 (./docker/realtime.Dockerfile, ghcr.io/simstudioai/realtime, ECR_REALTIME)	3m 37s
Build AMD64 (./docker/db.Dockerfile, ghcr.io/simstudioai/migrations, ECR_MIGRATIONS)	1m 51s
Process Docs	-1s
Create GHCR Manifests	-1s
Create GitHub Release	0s
	11m 43s

Provide feedback