build(deps-dev): bump @sourcegraph/lsif-tsc from 0.6.4 to 0.6.6
build(deps-dev): bump @sourcegraph/lsif-tsc from 0.6.4 to 0.6.6

Bumps [@sourcegraph/lsif-tsc](https://github.com/sourcegraph/lsif-node) from 0.6.4 to 0.6.6.
- [Release notes](https://github.com/sourcegraph/lsif-node/releases)
- [Commits](https://github.com/sourcegraph/lsif-node/compare/v0.6.4...v0.6.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
jamesramsay/hercule