Bumps [deps/GSL](https://github.com/microsoft/GSL) from `7d49d4b` to `991fa66`.
- [Release notes](https://github.com/microsoft/GSL/releases)
- [Commits](7d49d4b45d...991fa6682e
)
---
updated-dependencies:
- dependency-name: deps/GSL
dependency-type: direct:production
...
Signed-off-by: dependabot[bot] <support@github.com>