Updated fingerprint for `europe-west1` server

[aDrius19]

For RTDBs, based on eu server, this fingerprint worked like a charm, updated on the FirebaseHttpClient.h file:

EA:38:1E:A4:C8:07:1F:1D:A5:60:1B:FE:E0:72:2E:41:EA:0E:58:80

Might expire at the end of this month, but use this website:
https://www.grc.com/fingerprints.htm generate others for different domains and post also them here, might help others in need!