Bump pytest from 6.1.2 to 6.2.2 (#81)

* Bump pytest from 6.1.2 to 6.2.2

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.1.2 to 6.2.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.1.2...6.2.2)

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

* rm poetry.lock

* Update pyproject.toml

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Shota Imaki <shota.imaki.0801@gmail.com>

pyproject.toml

@@ -12,7 +12,7 @@ pandas = "^1.1.4"
 requests = "^2.23.0"
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.1.2"
+pytest = "^6.2.2"
 pytest-cov = "^2.11.1"
 codecov = "^2.1.10"
 flake8 = "^3.9.0"