Bump poetry from 1.0.10 to 1.1.0 in /.github/workflows

Bumps [poetry](https://github.com/python-poetry/poetry) from 1.0.10 to 1.1.0.
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/master/CHANGELOG.md)
- [Commits](python-poetry/poetry@1.0.10...1.1.0)

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

Author: dependabot[bot]

.github/workflows/constraints.txt

@@ -1,4 +1,4 @@
 pip==20.2.3
 nox==2020.8.22
-poetry==1.0.10
+poetry==1.1.0
 virtualenv==20.0.31