build(deps): bump third_party/tools/synlig from 4885d4d to 7f99048

Bumps [third_party/tools/synlig](https://github.com/chipsalliance/synlig) from `4885d4d` to `7f99048`.
- [Release notes](https://github.com/chipsalliance/synlig/releases)
- [Commits](chipsalliance/synlig@4885d4d...7f99048)

---
updated-dependencies:
- dependency-name: third_party/tools/synlig
  dependency-type: direct:production
...

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