Bump submodules/vipr from bdabdf3 to 6fdc76e

Bumps [submodules/vipr](https://github.com/microsoft/vipr) from `bdabdf3` to `6fdc76e`.
- [Release notes](https://github.com/microsoft/vipr/releases)
- [Commits](microsoft/Vipr@bdabdf3...6fdc76e)

---
updated-dependencies:
- dependency-name: submodules/vipr
  dependency-type: direct:production
...

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

Author: dependabot[bot]