DO access via env variables not works

[gelo22]

Problem:
When DO access configured via env variables SPACES_SECRET_KEY and SPACES_ACCESS_TOKEN - I see error:

14:16:49 [DEBUG] Registering unit type: shell
14:16:49 [DEBUG] Registering unit type: k8s-manifest
14:16:49 [DEBUG] Registering unit type: helm
14:16:49 [DEBUG] Registering unit type: kubernetes
14:16:49 [DEBUG] Registering unit type: tfmodule
14:16:49 [DEBUG] Registering unit type: printer
14:16:49 [DEBUG] Creates code directory: './.cluster.dev/cache'
14:16:49 [FATAL] Fatal error: apply: reading backend: s3 configuration diagnostics returns errors:

Summary: No valid credential sources found
Details: Please see 
for more information about providing credentials.

Error: failed to refresh cached credentials, no EC2 IMDS role found, operation error ec2imds: GetMetadata, access disabled to EC2 IMDS via client option, or "AWS_EC2_METADATA_DISABLED" environment variable

Configuration via yaml works as expected:

  access_key: "<SPACES_SECRET_KEY>"
  secret_key: "<SPACES_ACCESS_TOKEN>"

Source:

  access_key: "<SPACES_SECRET_KEY>" # Optional, it's better to use environment variable 'export SPACES_SECRET_KEY="key"'
  secret_key: "<SPACES_ACCESS_TOKEN>" # Optional, it's better to use environment variable 'export SPACES_ACCESS_TOKEN="token"'

https://github.com/shalb/cluster.dev/blob/master/docs/structure-backend.md#digital-ocean-spaces-and-minio
https://docs.cluster.dev/examples-do-k8s/

Cluster.dev Version:
cdev version v0.7.20
build timestamp: 2023-09-17T09:53:44+0000

Cluster.dev Config:
Any with DO backend

name: do-backend
kind: Backend
provider: s3
spec:
  bucket: my-cdev-state
  region: main
  endpoint: "https://fra1.digitaloceanspaces.com"
  skip_credentials_validation: true
  skip_region_validation: true
  skip_metadata_api_check: true