fix: update command args for datadog-ci

[adamstankiewicz]

After resolving the datadog-ci command missing issue, a different issue arose where the --minified-path-prefix appears to be missing:

Missing minified path
b'Deploy frontend: Uploading source maps to Datadog for app frontend-app-learner-portal-enterprise.'
b'Deploy frontend: Could not upload source maps to Datadog for app frontend-app-learner-portal-enterprise.'

@datadog/datadog-ci source throwing that error message: https://github.com/DataDog/datadog-ci/blob/bff12e212215133d0eb59ae1814d052a2ee886c2/src/commands/sourcemaps/upload.ts#L87-L91

Turns out the command_args concatenated was missing a comma between --release-version and --minified-path-prefix.

With an added comma, it should be treated as 3 independent command arguments instead.