yaml file sequence items spaces after hyphen

Ubuntu 18.04 and archlinux
sops v3.3.1

Have weird yaml thing, encrypted a file with lines that looks like

  ENV:
  - name: "AWS_KEY"
    value: "BLAHBLAHBLAH"
  - name: "AWS_REGION"
    value: "eu-west-1"
... etc..

SO i do `sops --encrypt file.yaml --output > file-sops.yaml
then do sops --decrypt file-sops.yaml > file-dec.yaml
the decrypted file now has those lines looking like

    ENV:
    -   name: AWS_KEY
        value: BLAHBLAHBLAH
    -   name: AWS_REGION
        value: eu-west-1

So, it's changed the yaml indent to 4 spaces, that's fine, it's in the spec,
But it's added 2 spaces to the 1 space that was between the key and the - for each sequence item key
yamlint blows up on this. though it doesn't cause issues in the python script that i then pass this config yaml to in my usecase, the CI issues yamllint causes are the problem.

The resulting yamllint output on my actual file in my environment, shows up like:

~$> yamllint myfile-dec.yaml 
myfile-dec.yaml
  1:1       warning  missing document start "---"  (document-start)
  10:8      error    too many spaces after hyphen  (hyphens)
  10:5      error    wrong indentation: expected 8 but found 4  (indentation)
  12:8      error    too many spaces after hyphen  (hyphens)
  14:8      error    too many spaces after hyphen  (hyphens)
  16:8      error    too many spaces after hyphen  (hyphens)
...etc...

Reproduce the issue with file.yaml, file-sops.yaml, and file-dec.yaml using the sops --encrypt and sops --decrypt commands shown. Compare the decrypted sequence formatting with yamllint output; done means decryption preserves valid sequence indentation without extra spaces after hyphens.