Update CHANGELOG.md

CHANGELOG.md

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 ## Version 4.1.1 (Mar 11th, 2024)
 ### Database updates
-* We just released the new vJun23_202423 database
-  * Same SGBs as for the vJun23_202307 version
-  * The NCBI taxonomy assignment has been fixed to keep the taxa consistent across the MPA4 taxnomic tree
+* We just released the new vJun23_202403 database
+  * Same SGBs as for the vJun23_202307 version, but the NCBI taxonomy assignment has been fixed to keep the taxa consistent across the MetaPhlAn taxonomic tree
   * The errors in the relative abundance estimation at higher taxonomic levels had been fixed
+  * Fixed a bug that would halt MetaPhlAn execution when the option `--profile_vscs` was used but had no viral hits
 ### New features
 * [MetaPhlAn] The new `fix_relab_mpa4.py` script enables to fix errors in the relative abundances in profiles generated with previous databases
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