chore(deps): Update dependency sphinxcontrib.devhelp to v2

Author: renovate[bot]

requirements.txt

@@ -3,7 +3,7 @@ sphinx-intl==2.1.0
 sphinx-JDLinker==2.0.1
 sponge-docs-theme==1.1.0
 sphinxcontrib-applehelp==1.0.4
-sphinxcontrib.devhelp==1.0.2
+sphinxcontrib.devhelp==2.0.0
 sphinxcontrib.htmlhelp==2.0.0
 sphinxcontrib.qthelp==1.0.3
 sphinxcontrib.serializinghtml==1.1.5