Bump nox-poetry from 0.8.1 to 0.8.2 in /.github/workflows (#820)

Bumps [nox-poetry](https://github.com/cjolowicz/nox-poetry) from 0.8.1 to 0.8.2.
- [Release notes](https://github.com/cjolowicz/nox-poetry/releases)
- [Commits](cjolowicz/nox-poetry@v0.8.1...v0.8.2)

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.github/workflows/constraints.txt

@@ -1,7 +1,7 @@
 pip==21.0.1
 cookiecutter==1.7.2
 nox==2020.12.31
-nox-poetry==0.8.1
+nox-poetry==0.8.2
 poetry==1.1.5
 pre-commit==2.11.1
 virtualenv==20.4.2