update a reference to default tagger

README.md

@@ -171,7 +171,7 @@ Note also that, with the above `export` expression, the `JULIA_PROJECT` environm
 
 To install a backend, taking MaggotUBA-adapter as an example:
 ```
-git clone --depth 1 --single-branch -b 20230111 https://gitlab.pasteur.fr/nyx/MaggotUBA-adapter MaggotUBA
+git clone --depth 1 --single-branch -b 20230129 https://gitlab.pasteur.fr/nyx/MaggotUBA-adapter MaggotUBA
 cd MaggotUBA
 poetry install
 ```