Store Google reCAPTCHA Enterprise credentials private_key in Azure Static Web Apps Configuration

Question

I have developed Azure Static Web Apps (Blazor Webassembly, Visual Studio 2022 Community) with integrated Google reCAPTCHA Enterprise service. Handling reCAPTCHA Enterprise is done in Azure Functions, which also sends an e-mail (using Sendgrid). During development, I stored my Google credentials in the local.settings.json file.

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "SendGridApiKey": "<my Sendgrid key>",
    "type": "service_account",
    "project_id": "<my project_id>",
    "private_key_id": "<my private_key_id>",
    "private_key": "<my private_key>",
    "client_email": "my client_email",
    "client_id": "<my client_id>",
    "auth_uri": "<auth_uri>",
    "token_uri": "<token_uri>",
    "auth_provider_x509_cert_url": "<auth_provider_x509_cert_url>",
    "client_x509_cert_url": "<client_x509_cert_url>",
    "universe_domain": "googleapis.com",
    "site_key": "<site_key>"
  },
  "Host": { "CORS": "*" }
}

The private_key contains 1733 characters, starts with -----BEGIN PRIVATE KEY-----\n, ends with \n-----END PRIVATE KEY-----\n, and has a lot of escape characters and slashes, back-slashes as well \n, /\n, \, /.

During development, everything works fine! But unfortunately NOT in production.

If I store the private_key in the App configuration area, my Google Service will fail authentication. The only way I managed to get it working was to store private_key as a string in my code. All the rest is stored in the App configuration.

I'm sure that the problem arises because of the \n, but I have no idea how to handle that in the configuration value pairs.

Any idea how to manage this?