Bump mypy from 0.610 to 0.620 (#82)

Bumps [mypy](https://github.com/python/mypy) from 0.610 to 0.620.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.610...v0.620)

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

pyproject.lock

@@ -378,7 +378,7 @@ name = "mypy"
 optional = false
 platform = "*"
 python-versions = "*"
-version = "0.610"
+version = "0.620"
 
 [package.dependencies]
 typed-ast = ">=1.1.0,<1.2.0"
@@ -760,7 +760,7 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, <4"
 version = "1.23"
 
 [metadata]
-content-hash = "7b56b53564139c33ca279b1eeb75a74a4c66e2265a2ec36c994e857ae2f74b54"
+content-hash = "95e1918ae8baa579978c10026f7f3010655587ff3bb7937764bf87d1ec7785c5"
 platform = "*"
 python-versions = "^3.6"
 
@@ -799,7 +799,7 @@ markupsafe = ["a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"
 mccabe = ["ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42", "dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"]
 mistune = ["b4c512ce2fc99e5a62eb95a4aba4b73e5f90264115c40b70a21e1f7d4e0eac91", "bc10c33bfdcaa4e749b779f62f60d6e12f8215c46a292d05e486b869ae306619"]
 more-itertools = ["c187a73da93e7a8acc0001572aebc7e3c69daf7bf6881a2cea10650bd4420092", "c476b5d3a34e12d40130bc2f935028b5f636df8f372dc2c1c01dc19681b2039e", "fcbfeaea0be121980e15bc97b3817b5202ca73d0eae185b4550cbfce2a3ebb3d"]
-mypy = ["1b899802a89b67bb68f30d788bba49b61b1f28779436f06b75c03495f9d6ea5c", "f472645347430282d62d1f97d12ccb8741f19f1572b7cf30b58280e4e0818739"]
+mypy = ["673ea75fb750289b7d1da1331c125dc62fc1c3a8db9129bb372ae7b7d5bf300a", "c770605a579fdd4a014e9f0a34b6c7a36ce69b08100ff728e96e27445cef3b3c"]
 packaging = ["e9215d2d2535d3ae866c3d6efc77d5b24a0192cce0ff20e42896cc0664f889c0", "f019b770dd64e585a99714f1fd5e01c7a8f11b45635aa953fd41c689a657375b"]
 pbr = ["1b8be50d938c9bb75d0eaf7eda111eec1bf6dc88a62a6412e33bf077457e0f45", "b486975c0cafb6beeb50ca0e17ba047647f229087bd74e37f4a7e2cac17d2caa"]
 pep8-naming = ["360308d2c5d2fff8031c1b284820fbdb27a63274c0c1a8ce884d631836da4bdd", "624258e0dd06ef32a9daf3c36cc925ff7314da7233209c5b01f7e5cdd3c34826"]

pyproject.toml

@@ -61,7 +61,7 @@ flake8-module-name = "^0.1.5"
 flake8-bugbear = "^18.8"
 flake8-pytest = "^1.3"
 pep8-naming = "^0.7.0"
-mypy = "^0.610.0"
+mypy = "^0.620"
 sphinx = "^1.7"
 sphinx-autodoc-typehints = "^1.3"
 sphinxcontrib-napoleon = "^0.6.1"