Add new acr values to locales

[phavekes]

• "https://refeds.org/assurance/IAP/medium"
• "https://refeds.org/assurance/IAP/high"
• "https://refeds.org/assurance/IAP/medium/mfa"
• "https://refeds.org/assurance/IAP/high/mfa" -
• "https://eduid.nl/trust/linked-institution/mfa"
• "https://eduid.nl/trust/validate-names/mfa"
• "https://eduid.nl/trust/validate-names-external/mfa"
• "https://eduid.nl/trust/affiliation-student/mfa"