Bump flake8 from 2.2.2 to 3.8.0#25

Bumps [flake8](https://gitlab.com/pycqa/flake8) from 2.2.2 to 3.8.0. <details> <summary>Commits</summary> <ul> <li><a href="https://gitlab.com/pycqa/flake8/commit/b4d285019210ccdb5d526e64c281db64e5316d6c"><code>b4d2850</code></a> Release 3.8.0</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/03c7dd3a8d3624188a2f18e6e630f44b453847d8"><code>03c7dd3</code></a> Merge branch 'exclude_dotfiles' into 'master'</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/9e67511c691d460ee46296710e40d1fbe7af0837"><code>9e67511</code></a> Fix using --exclude=.* to not match <code>.</code> and <code>..</code></li> <li><a href="https://gitlab.com/pycqa/flake8/commit/6c4b5c85c692a8d1d485614029f824f829489bca"><code>6c4b5c8</code></a> Merge branch 'linters_py3' into 'master'</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/309db63ba8ae7037308036de3a34be8ccafade07"><code>309db63</code></a> switch dogfood to use python3</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/8905a7af9e7d50b2654a4e04b5f51aefec834b60"><code>8905a7a</code></a> Merge branch 'logical_position_out_of_bounds' into 'master'</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/609010ce7aeecc22a3c104e5c0eb39b3746ace7a"><code>609010c</code></a> Fix logical checks which report position out of bounds</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/0c3b8045a7b51aec7abf19dea94d5292cebeeea0"><code>0c3b804</code></a> Merge branch 'deprecate_git_hook' into 'master'</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/16498273967e9acf965b5599f4353d24413c7f91"><code>1649827</code></a> exclude broken pylint version</li> <li><a href="https://gitlab.com/pycqa/flake8/commit/43b14ff2d779eb4f4b3c7b8b9395eeaaee60494c"><code>43b14ff</code></a> Add deprecation message for git hook</li> <li>Additional commits viewable in <a href="https://gitlab.com/pycqa/flake8/compare/2.2.2...3.8.0">compare view</a></li> </ul> </details> <br /> [](https://dependabot.com/compatibility-score/?dependency-name=flake8&package-manager=pip&previous-version=2.2.2&new-version=3.8.0) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com): - Update frequency (including time of day and day of week) - Pull request limits (per update run and/or open at any time) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired) </details>