build(deps): bump mypy from 0.781 to 0.782 (getsentry#736)

Bumps [mypy](https://github.com/python/mypy) from 0.781 to 0.782.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.781...v0.782)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

linter-requirements.txt

@@ -1,6 +1,6 @@
 black==19.10b0
 flake8
 flake8-import-order
-mypy==0.781
+mypy==0.782
 flake8-bugbear>=19.8.0
 pep8-naming