fix: compare only a git status subset

[Eomm]

releasify v3 triggers this error on node v18.

Note the detached property.

This fix aims to check only the fields we are interested in

[1661407621817] DEBUG: Complete repo status current="master" tracking="origin/master"
ERROR: The git repo must be clean (committed and pushed) before releasing!
    err: {
      "type": "AssertionError",
      "message": "The git repo must be clean (committed and pushed) before releasing!",
      "stack":
          AssertionError [ERR_ASSERTION]: The git repo must be clean (committed and pushed) before releasing!
              at module.exports (/Users/mspigolon/.nvm/versions/node/v18.6.0/lib/node_modules/releasify/lib/commands/publish.js:83:10)
              at async Command.func (/Users/mspigolon/.nvm/versions/node/v18.6.0/lib/node_modules/releasify/lib/cli.js:18:7)
      "generatedMessage": false,
      "code": "ERR_ASSERTION",
      "actual": {
        "not_added": [],
        "conflicted": [],
        "created": [],
        "deleted": [],
        "modified": [],
        "renamed": [],
        "files": [],
        "staged": [],
        "ahead": 0,
        "behind": 0,
        "tracking": "origin/master",
        "detached": false
      },
      "expected": {
        "not_added": [],
        "conflicted": [],
        "created": [],
        "deleted": [],
        "modified": [],
        "renamed": [],
        "files": [],
        "staged": [],
        "ahead": 0,
        "behind": 0,
        "tracking": "origin/master"
      },
      "operator": "deepStrictEqual"
    }