Make dh_sphinxdoc generate stricter dependencies on libjs-sphinxdoc.

debian/changelog

 sphinx (3.1.2-2) UNRELEASED; urgency=low
 
+  [ Debian Janitor ]
   * Set field Upstream-Name in debian/copyright.
   * Fix day-of-week for changelog entry 0.6.1-1.
 
+  [ Dmitry Shachnev ]
+  * Make dh_sphinxdoc generate stricter dependencies on libjs-sphinxdoc.
+
  -- Debian Janitor <janitor@jelmer.uk>  Tue, 07 Jul 2020 20:55:53 -0000
 
 sphinx (3.1.2-1) experimental; urgency=medium

debian/dh-sphinxdoc/index

 # <filename> [min-version]
-1.0/doctools.js
+1.0/doctools.js 1.8
 1.0/jquery.js
-1.0/searchtools.js
+1.0/searchtools.js 2.0
 1.0/sidebar.js
 1.0/theme_extras.js
 1.0/underscore.js