Update flake8 requirement from <=7.1.2,>=5.0.0 to >=5.0.0,<=7.2.0 (#81)

Updates the requirements on [flake8](https://github.com/pycqa/flake8) to
permit the latest version.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/PyCQA/flake8/commit/16f5f28a384f0781bebb37a08aa45e65b9526c50"><code>16f5f28</code></a>
Release 7.2.0</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/ebad305769bbf62d92901a1b9c9121c1b4fec00b"><code>ebad305</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1974">#1974</a>
from PyCQA/update-plugins</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/d56d569ce40a623a17c212ea7f2b306714f27f31"><code>d56d569</code></a>
update versions of pycodestyle / pyflakes</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/a7e8f6250c23e71546ca4cc35322bc06fe90f9f4"><code>a7e8f62</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1973">#1973</a>
from PyCQA/py39-plus</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/9d55ccdb729d1255b9cf09438b6073b05b9ce52c"><code>9d55ccd</code></a>
py39+</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/e492aeb385f87c0520c65d32747763209ed1da21"><code>e492aeb</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1967">#1967</a>
from PyCQA/unnecessary-mocks</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/fa2ed7145cdf80fd983c2a436226a074f9a9d664"><code>fa2ed71</code></a>
remove a few unnecessary mocks in test_checker_manager</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/fffee8ba9dc5903484f99390e6c7f4bbef59bda7"><code>fffee8b</code></a>
Release 7.1.2</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/19001f77f3a8edccfd2d4c71e3c0fd7ed7fcb329"><code>19001f7</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1966">#1966</a>
from PyCQA/limit-procs-to-file-count</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/f35737a32d8283fd0d3456bd9919718ff2d1b077"><code>f35737a</code></a>
avoid starting unnecessary processes when file count is limited</li>
<li>Additional commits viewable in <a
href="https://github.com/pycqa/flake8/compare/5.0.0...7.2.0">compare
view</a></li>
</ul>
</details>
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</details>

Author: f0uriest

requirements-dev.txt

@@ -11,7 +11,7 @@ sphinx-github-style >= 1.0, <= 1.2.2
 
 # linting
 black == 25.1.0
-flake8 >= 5.0.0, <= 7.1.2
+flake8 >= 5.0.0, <= 7.2.0
 flake8-docstrings >= 1.0.0, <= 1.7.0
 flake8-eradicate >= 1.0.0, <= 1.5.0
 flake8-isort >= 5.0.0, <= 6.1.2