fix: fallback to system SSL certs when certifi fails

[ptpt]

MLY tools may fail in SSL verification some corporate proxy. This PR try using the system SSL certs if it fails using the SSL certs provided by certifi.

2025-01-23 22:13:59,152 - WARNING - SSL error occurred, falling back to system SSL certificates: HTTPSConnectionPool(host='graph.mapillary.com', port=443): Max retries exceeded with url: /login (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1018)')))