FAST: fix missing value to format principalSet

[imp14a]

No description provided.

[imp14a]

To fix error in resman stage

Error: Error in function call

on cicd-data-platform.tf line 112, in module "branch-dp-dev-sa-cicd":
112: ? format(
113: local.identity_providers[each.value.identity_provider].principalset_tpl,
114: each.value.name
115: )
├────────────────
│ each.value.identity_provider is "github-fip"
│ each.value.name is "imp14a/fast-data-platform-dev"
│ local.identity_providers is map of object with 1 element

Call to function "format" failed: not enough arguments for "%s" at 58: need
index 2 but have 1 total.

[ludoo]

thanks for spotting this!