build(deps): bump websockets from 9.1 to 10.0 in /.github/workflows (#155)

Bumps [websockets](https://github.com/aaugustin/websockets) from 9.1 to 10.0.
- [Release notes](https://github.com/aaugustin/websockets/releases)
- [Commits](python-websockets/websockets@9.1...10.0)

---
updated-dependencies:
- dependency-name: websockets
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

Author: dependabot[bot]

.github/workflows/constraints.txt

@@ -3,6 +3,6 @@ pre-commit==2.15.0
 black==21.8b0
 flake8==3.9.2
 reorder-python-imports==2.6.0
-websockets==9.1
+websockets==10.0
 sqlalchemy==1.4.23
 ocpp>=0.8.3