Random CI test failure in date.birthdate for specific age about faker HOT 2 OPEN

function getAge(birthdate, refDate) {
    const value = birthdate.valueOf()
    const refDateValue = refDate.valueOf()
    const deltaDate = new Date(refDateValue - value)
    return deltaDate.getUTCFullYear() - 1970
}

const refDateFixed = new Date("2024-04-02T12:00:00");
faker.seed(123456);
const results = faker.helpers.multiple(()=>getAge(faker.date.birthdate({mode:"age", min:21, max:21, refDate:refDateFixed}), refDateFixed),{count:1000000})
const counts = results.reduce((acc, age) => (acc[age] = (acc[age] || 0) + 1, acc), {})
console.dir(counts)
//{ '21': 997248, '22': 2752 }