[ecash-herald] Add CoinMinerz.com to parsing support

Summary:
T3120

Add miner from observed block that is not currently parsed by herald

Test Plan:
npm test

screenshot of running node scripts/sendMsgByBlock 787515 from a local config with telegram bot populated attached

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D14385