chore(deps): bump bitcoinjs-lib from 5.2.0 to 6.1.6

Bumps [bitcoinjs-lib](https://github.com/bitcoinjs/bitcoinjs-lib) from 5.2.0 to 6.1.6.
- [Changelog](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/CHANGELOG.md)
- [Commits](bitcoinjs/bitcoinjs-lib@v5.2.0...v6.1.6)

---
updated-dependencies:
- dependency-name: bitcoinjs-lib
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -63,7 +63,7 @@
     "@interlay/monetary-js": "0.7.4",
     "@polkadot/api": "10.9.1",
     "big.js": "6.1.1",
-    "bitcoinjs-lib": "^5.2.0",
+    "bitcoinjs-lib": "^6.1.6",
     "bn.js": "4.12.0",
     "cross-fetch": "^4.0.0",
     "yargs": "^17.5.1"