chore: regenerate gen files (#40)

## Description

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At least please give us some description what you are trying to achieve and why your change is needed. -->

relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #40
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

stackit/internal/services/postgresflexalpha/database/datasources_gen/databases_data_source_gen.go

@@ -126,8 +126,6 @@ func DatabasesDataSourceSchema(ctx context.Context) schema.Schema {
 						"database_name.asc",
 						"database_owner.desc",
 						"database_owner.asc",
-						"index.asc",
-						"index.desc",
 					),
 				},
 			},

stackit/internal/services/postgresflexalpha/flavors/datasources_gen/flavors_data_source_gen.go

@@ -151,8 +151,6 @@ func FlavorsDataSourceSchema(ctx context.Context) schema.Schema {
 				MarkdownDescription: "Sorting of the flavors to be returned on each page.",
 				Validators: []validator.String{
 					stringvalidator.OneOf(
-						"index.desc",
-						"index.asc",
 						"cpu.desc",
 						"cpu.asc",
 						"flavor_description.asc",

stackit/internal/services/postgresflexalpha/instance/datasources_gen/instances_data_source_gen.go

@@ -113,8 +113,6 @@ func InstancesDataSourceSchema(ctx context.Context) schema.Schema {
 				MarkdownDescription: "Sorting of the items to be returned on each page.",
 				Validators: []validator.String{
 					stringvalidator.OneOf(
-						"index.desc",
-						"index.asc",
 						"id.desc",
 						"id.asc",
 						"is_deletable.desc",

stackit/internal/services/postgresflexalpha/user/datasources_gen/users_data_source_gen.go

@@ -86,8 +86,6 @@ func UsersDataSourceSchema(ctx context.Context) schema.Schema {
 					stringvalidator.OneOf(
 						"id.asc",
 						"id.desc",
-						"index.desc",
-						"index.asc",
 						"name.desc",
 						"name.asc",
 						"status.desc",