Automated Changelog Entry for 6.4.4 on master

Author: github-actions[bot]

CHANGELOG.md

@@ -14,6 +14,27 @@ Use `pip install pip --upgrade` to upgrade pip. Check pip version with
 
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+## 6.4.4
+
+([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.3...c06c340574e1d2207940c5bd1190eb73d82ab945))
+
+### Documentation improvements
+
+- Update Manual Release Instructions [#6152](https://github.com/jupyter/notebook/pull/6152) ([@blink1073](https://github.com/blink1073))
+
+### Other merged PRs
+
+- Use default JupyterLab CSS sanitizer options for Markdown [#6160](https://github.com/jupyter/notebook/pull/6160) ([@krassowski](https://github.com/krassowski))
+- Fix syntax highlight [#6128](https://github.com/jupyter/notebook/pull/6128) ([@massongit](https://github.com/massongit))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyter/notebook/graphs/contributors?from=2021-08-11&to=2021-09-03&type=c))
+
+[@blink1073](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ablink1073+updated%3A2021-08-11..2021-09-03&type=Issues) | [@kevin-bates](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Akevin-bates+updated%3A2021-08-11..2021-09-03&type=Issues) | [@krassowski](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Akrassowski+updated%3A2021-08-11..2021-09-03&type=Issues) | [@massongit](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Amassongit+updated%3A2021-08-11..2021-09-03&type=Issues) | [@minrk](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Aminrk+updated%3A2021-08-11..2021-09-03&type=Issues) | [@Zsailer](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3AZsailer+updated%3A2021-08-11..2021-09-03&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
 ## 6.4.3
 
 ([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.2...c373bd89adaaddffbb71747ebbcfe8a749cae0a8))
@@ -33,8 +54,6 @@ Use `pip install pip --upgrade` to upgrade pip. Check pip version with
 
 [@afshin](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Aafshin+updated%3A2021-08-06..2021-08-10&type=Issues) | [@blink1073](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ablink1073+updated%3A2021-08-06..2021-08-10&type=Issues) | [@Zsailer](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3AZsailer+updated%3A2021-08-06..2021-08-10&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 6.4.2
 
 ([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.0...999e8322bcd24e0ed62b180c19ec13db3f48165b))