build: Update flake8 requirement from ^6.1.0 to >=6.1,<8.0 (#14)

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/88a4f9b2f48fc44b025a48fa6a8ac7cc89ef70e0"><code>88a4f9b</code></a>
Release 7.0.0</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/6f3a60dd460f473aa0017f3d6b3164106b0d2fdc"><code>6f3a60d</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1906">#1906</a>
from PyCQA/upgrade-pyflakes</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/cde8570df3bf4b647dfa65a97613fb325a9f1bbd"><code>cde8570</code></a>
upgrade pyflakes to 3.2.x</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/2ab9d76639c43f7462191e46c18afb31a15e9e36"><code>2ab9d76</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1903">#1903</a>
from PyCQA/pre-commit-ci-update-config</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/e27611f1eadc16a5bd02125aa8a054c632d3b0c7"><code>e27611f</code></a>
[pre-commit.ci] pre-commit autoupdate</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/9d20be1d1f07513b82088860caa7130e2ac49618"><code>9d20be1</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1902">#1902</a>
from PyCQA/pre-commit-ci-update-config</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/06c1503842ee90a4cca5ed57908c0f27595a6f4d"><code>06c1503</code></a>
[pre-commit.ci] auto fixes from pre-commit.com hooks</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/b67ce03a4a9c9902fea163021a844f34287ee6bc"><code>b67ce03</code></a>
Fix bugbear lints</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/c8801c129ab3138c4f3db4841d76bb30ed8e3f8c"><code>c8801c1</code></a>
[pre-commit.ci] pre-commit autoupdate</li>
<li><a
href="https://github.com/PyCQA/flake8/commit/045f297f89a4d6b7f1bb6dc6e62f6eb506aec320"><code>045f297</code></a>
Merge pull request <a
href="https://redirect.github.com/pycqa/flake8/issues/1893">#1893</a>
from PyCQA/pre-commit-ci-update-config</li>
<li>Additional commits viewable in <a
href="https://github.com/pycqa/flake8/compare/6.1.0...7.0.0">compare
view</a></li>
</ul>
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pyproject.toml

@@ -24,7 +24,7 @@ msrest = "^0.7.1"
 
 [tool.poetry.group.dev.dependencies]
 black = ">=23.9.1,<25.0.0"
-flake8 = "^6.1.0"
+flake8 = ">=6.1,<8.0"
 coverage = "^7.3.1"
 pytest = ">=7.4.2,<9.0.0"
 snakemake = {git = "https://github.com/snakemake/snakemake.git"}