gh-39680: sphinxcontrib-htmlhelp 2.1.0
    
urgently needed for python 3.13 support.
See https://groups.google.com/g/sage-devel/c/lr03GlRBr9g/m/M8nTdw_5AQAJ

- [x] The title is concise and informative.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

<!-- List all open PRs that this PR logically depends on. For example,
-->
<!-- - #12345: short description why this is a dependency -->
<!-- - #34567: ... -->
    
URL: #39680
Reported by: Dima Pasechnik
Reviewer(s):

Author: Release Manager

build/pkgs/sphinxcontrib_htmlhelp/checksums.ini

@@ -1,4 +1,4 @@
 tarball=sphinxcontrib_htmlhelp-VERSION-py3-none-any.whl
-sha1=6b60c617a0fe98a663ca146edc03867581da5e07
-sha256=393f04f112b4d2f53d93448d4bce35842f62b307ccdc549ec1585e950bc35e04
+sha1=a98917b376c91fc14672275e7d1577bb3efbecc0
+sha256=166759820b47002d22914d64a075ce08f4c46818e17cfc9470a9786b759b19f8
 upstream_url=https://files.pythonhosted.org/packages/py3/s/sphinxcontrib_htmlhelp/sphinxcontrib_htmlhelp-VERSION-py3-none-any.whl

build/pkgs/sphinxcontrib_htmlhelp/package-version.txt

@@ -1 +1 @@
-2.0.5
+2.1.0

build/pkgs/sphinxcontrib_htmlhelp/version_requirements.txt

@@ -1 +1 @@
-sphinxcontrib_htmlhelp >=1.0.3
+sphinxcontrib_htmlhelp >=2.0.6