fix: FORMS-1685 remove obsolete version attribute

[WalterMoar]

Description

When building the devcontainer a docker compose file is used. Running this file creates the following warning:

docker compose -f /workspaces/common-hosted-form-service/.devcontainer/chefs_local/docker-compose.yml down

WARN[0000] /workspaces/common-hosted-form-service/.devcontainer/chefs_local/docker-compose.yml: the attribute version is obsolete, it will be ignored, please remove it to avoid potential confusion

Acceptance Criteria

• The warning no longer appears when the container is built

Type of Change

fix (a bug fix)

Checklist

• I have read the CONTRIBUTING doc
• I have checked that unit tests pass locally with my changes
• I have run the npm script lint on the frontend and backend
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have approval from the product owner for the contribution in this pull request

[WalterMoar]

Maybe this is a difference in how Prettier is applied. I'll see if I can standardize it so that we don't have this kind of churn in YAML files.