chore(deps): update dependency werkzeug to v2.3.8

Author: renovate[bot]

requirements.txt

@@ -11,5 +11,5 @@ MarkupSafe==2.1.3
 misaka==2.1.1
 pytest==7.4.1
 pytest-cov==4.1.0
-Werkzeug==2.3.6
+Werkzeug==2.3.8
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability