Automated Changelog Entry for 6.4.8 on master (#6280)

Co-authored-by: GitHub Action <41898282+github-actions[bot]@users.noreply.github.com>

Author: kevin-bates

CHANGELOG.md

@@ -14,6 +14,22 @@ Use `pip install pip --upgrade` to upgrade pip. Check pip version with
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 6.4.8
+
+([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.7...479902d83a691253e0cff8439a33577e82408317))
+
+### Bugs fixed
+
+- Fix to remove potential memory leak on Jupyter Notebooks ZMQChannelHandler code [#6251](https://github.com/jupyter/notebook/pull/6251) ([@Vishwajeet0510](https://github.com/Vishwajeet0510))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyter/notebook/graphs/contributors?from=2022-01-12&to=2022-01-25&type=c))
+
+[@Vishwajeet0510](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3AVishwajeet0510+updated%3A2022-01-12..2022-01-25&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
 ## 6.4.7
 
 ([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.6...b77b5e38b8fa1a20150d7fa4d735dbf1c4f00418))
@@ -40,8 +56,6 @@ Use `pip install pip --upgrade` to upgrade pip. Check pip version with
 
 [@antoinecarme](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Aantoinecarme+updated%3A2021-11-16..2022-01-12&type=Issues) | [@blink1073](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ablink1073+updated%3A2021-11-16..2022-01-12&type=Issues) | [@ccw630](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Accw630+updated%3A2021-11-16..2022-01-12&type=Issues) | [@kevin-bates](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Akevin-bates+updated%3A2021-11-16..2022-01-12&type=Issues) | [@LiHua-Official](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3ALiHua-Official+updated%3A2021-11-16..2022-01-12&type=Issues) | [@penguinolog](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Apenguinolog+updated%3A2021-11-16..2022-01-12&type=Issues) | [@tornaria](https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Atornaria+updated%3A2021-11-16..2022-01-12&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 6.4.6
 
 ([Full Changelog](https://github.com/jupyter/notebook/compare/v6.4.5...160c27d3c23dafe8b42240571db21b0d5cbae2fe))