Bump plotly from 5.17.0 to 5.18.0 in /requirements (#100)

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Author: dependabot[bot]

requirements/requirements_doc.txt

@@ -9,7 +9,7 @@ numpy==1.26.1
 numpydoc==1.6.0
 pandas==2.1.2
 panel==1.2.3
-plotly==5.17.0
+plotly==5.18.0
 pypandoc==1.12
 pythreejs==2.4.2
 pyvista==0.42.3