gh-37543: build/pkgs/sagemath_doc_html/dependencies: Add 'graphs'
    
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Fixes build failure reported in https://groups.google.com/g/sage-
release/c/oTnTrEnB3YU/m/HONTAsE7BQAJ


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URL: #37543
Reported by: Matthias Köppe
Reviewer(s): Kwankyu Lee

Author: Release Manager

build/pkgs/sagemath_doc_html/dependencies

@@ -1,4 +1,4 @@
-sagelib sphinx sphinx_copybutton sphinx_inline_tabs pplpy_doc | $(SAGERUNTIME) maxima networkx scipy sympy matplotlib pillow mathjax mpmath ipykernel jupyter_client conway_polynomials tachyon jmol ipywidgets jupyter_sphinx sage_docbuild elliptic_curves furo fpylll
+sagelib sphinx sphinx_copybutton sphinx_inline_tabs pplpy_doc | $(SAGERUNTIME) maxima networkx scipy sympy matplotlib pillow mathjax mpmath ipykernel jupyter_client conway_polynomials tachyon jmol ipywidgets jupyter_sphinx sage_docbuild elliptic_curves furo fpylll graphs
 
 # Building the documentation has many dependencies, because all
 # documented modules are imported and because we use matplotlib to