build(deps): update pytest requirement from <9,>=6.2.5 to >=8.4.2,<9 (#104)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/testing.txt

@@ -1,5 +1,5 @@
 # pip install -r requirements/testing.txt
-pytest>=6.2.5,<9
+pytest>=8.4.2,<9
 pytest-cov>=3,<8
 Flask>=2.0.3,<4 
 gevent>=22.10.2,<27