build(deps): bump github.com/libsv/go-bc from 0.1.11 to 0.1.12

Bumps [github.com/libsv/go-bc](https://github.com/libsv/go-bc) from 0.1.11 to 0.1.12.
- [Release notes](https://github.com/libsv/go-bc/releases)
- [Changelog](https://github.com/libsv/go-bc/blob/master/.goreleaser.yml)
- [Commits](libsv/go-bc@v0.1.11...v0.1.12)

---
updated-dependencies:
- dependency-name: github.com/libsv/go-bc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>