Update NEWS.md by squashing updates in pr/release-6.2.64

NEWS.md

 # Change Log
 
+## [6.2.63b.2](https://github.com/sympa-community/sympa/tree/6.2.63b.2) (2021-06-21)
+
+[Full Changelog](https://github.com/sympa-community/sympa/compare/6.2.63b.1...6.2.63b.2)
+
+**Implemented enhancements:**
+
+- Add `create_list.closed` scenario. [\#1191](https://github.com/sympa-community/sympa/pull/1191)
+- Make `distribution_ttl` and `inclusion_notification_feature` site-wide [\#1183](https://github.com/sympa-community/sympa/pull/1183) ([Jylhis](https://github.com/Jylhis))
+
+**Fixed bugs:**
+
+- S/MIME: Extracting certificate with multiple email values fails [\#1196](https://github.com/sympa-community/sympa/issues/1196)
+- Noises in HTTP server error log [\#1185](https://github.com/sympa-community/sympa/issues/1185)
+- `delete_list_member()` failed removing subscribers' pictures [\#1189](https://github.com/sympa-community/sympa/pull/1189)
+
 ## [6.2.63b.1](https://github.com/sympa-community/sympa/tree/6.2.63b.1) (2021-05-31)
 
 [Full Changelog](https://github.com/sympa-community/sympa/compare/6.2.62...6.2.63b.1)