99d986a providers/openid: Ensure base64 encoded trust root is used as a string

Authored and Committed by ngompa 15 days ago
    providers/openid: Ensure base64 encoded trust root is used as a string
    
    The rest of the application expects the base64-encoded trust root to
    be a string, and when it is bytes, it can fail with "incorrect padding" errors.
    
    Signed-off-by: Neal Gompa <ngompa13@gmail.com>