Bump msquic from ec8d8fc to b4b6f80 (#59)

Bumps [msquic](https://github.com/microsoft/msquic) from `ec8d8fc` to `b4b6f80`.
- [Release notes](https://github.com/microsoft/msquic/releases)
- [Commits](microsoft/msquic@ec8d8fc...b4b6f80)

---
updated-dependencies:
- dependency-name: msquic
  dependency-type: direct:production
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]