Add changelog

CHANGELOG.rst

@@ -1,12 +1,12 @@
 Version 8.8.1
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+This release contains a security fix, which is the most important part of the update.
+
 :Date: November 09, 2022
 
-* `@humitos <https://github.com/humitos>`__: Release 8.8.0 (`#9715 <https://github.com/readthedocs/readthedocs.org/pull/9715>`__)
+* Security fix: https://github.com/readthedocs/readthedocs.org/security/advisories/GHSA-98pf-gfh3-x3mp
 * `@stsewd <https://github.com/stsewd>`__: Unresolver: support external versions for single version projects (`#9709 <https://github.com/readthedocs/readthedocs.org/pull/9709>`__)
-* `@humitos <https://github.com/humitos>`__: Build: bump `readthedocs-sphinx-ext` to `<2.3` (`#9707 <https://github.com/readthedocs/readthedocs.org/pull/9707>`__)
-* `@benjaoming <https://github.com/benjaoming>`__: Proposal for sphinxcontrib-jquery (`#9665 <https://github.com/readthedocs/readthedocs.org/pull/9665>`__)
 
 Version 8.8.0
 -------------