Update pyquil requirement from ~=3.5.4 to ~=4.16.0

Updates the requirements on [pyquil](https://github.com/rigetti/pyquil) to permit the latest version.
- [Release notes](https://github.com/rigetti/pyquil/releases)
- [Changelog](https://github.com/rigetti/pyquil/blob/master/CHANGELOG.md)
- [Commits](rigetti/pyquil@v3.5.4...v4.16.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements-pyquil.txt

@@ -1,2 +1,2 @@
-pyquil~=3.5.4
+pyquil~=4.16.0
 cirq-rigetti>=1.4.0,<1.5.0