no-dup-id does not classify text as dynamic

When interpolating the id attribute the value is incorrectly marked as duplicate.

Reduced test-case

<div id="{{ ... }}"></div>
<div id="{{ ... }}"></div>

Configuration

{
    "extends": [
        "htmlvalidate:recommended"
    ],
    "elements": ["html5"],
    "transform": {
        "^.*\\.js$": "html-validate-angular/js",
        "^.*\\.html$": "html-validate-angular/html"
    }
}

Expected result

No error.

Actual result

2:10 error Duplicate ID "{{ ... }}" no-dup-id

Version

html-validate:
html-validate-angular:
html-validate-vue:
html-validate-protractor: . any other relevant plugin: