[ENG-11521](https://linear.app/comm/issue/ENG-11521/consider-lowering-fargate-resource-usage-on-prod).
Backup CPU: 512 -> 256 (last week max spike was ~4%, average ~2%)
Backup Memory: 1024 -> 512 (last week max spike was ~10%, average ~9%)
Blob CPU: 512 -> 256 (last week max spike was ~10%, average ~2%)
Blob Memory: 1024 -> 512 (last week max spike was ~12%, average ~8%)
Identity CPU: 512 -> 256 (last week max spike was ~25%, average ~2%)
After deploying, we can look again and stats after a week and consider lowering CPU to 256 and memory to 512.
Depends on D15541