Fix the location of the GCS and NFS attributes

[wintermi]

When attempting to mount GCS or NFS volumes, the following error message would appear:

│ Error: Unsupported attribute
│
│   on .terraform/modules/deploy_backfill_tmdb/modules/cloud-run-v2/job.tf line 133, in resource "google_cloud_run_v2_job" "job":
│  133:               bucket    = volumes.value.bucket
│     ├────────────────
│     │ volumes.value is object with 5 attributes
│
│ This object does not have an attribute named "bucket".
╵
╷
│ Error: Unsupported attribute
│
│   on .terraform/modules/deploy_backfill_tmdb/modules/cloud-run-v2/job.tf line 134, in resource "google_cloud_run_v2_job" "job":
│  134:               read_only = volumes.value.is_read_only
│     ├────────────────
│     │ volumes.value is object with 5 attributes
│
│ This object does not have an attribute named "is_read_only".

This fixes the above.

[ludoo]

good catch :)