message: fix(utxo-lib): use different bitcoinjs-lib specifier
  Use better repo name and pin to specific commit hash
  Issue:
diff: "dependencies": {
  "@bitgo/blake2b": "^3.0.1",
  "bitcoin-ops": "^1.3.0",
  - "bitcoinjs-lib": "git+https://github.com/BitGo/bitgo-utxo-lib.git#bitgo-bitcoinjs5",
  + "bitcoinjs-lib": "git+https://github.com/BitGo/bitcoinjs-lib.git#19fd098772",
  "bs58check": "^2.0.0",
  "typeforce": "^1.11.3",
  "varuint-bitcoin": "^1.0.4"
  