Update SAB membership

LS has stepped down.

rnacentral/portal/templates/portal/docs/sab.md

@@ -6,7 +6,6 @@
 [RNAcentral](/) and [Rfam](https://rfam.org) share a Scientific Advisory Board (SAB)
 which includes six RNA biologists covering a wide range of expertise from wet lab to computational research.
 
-- [Lovorka Stojic](https://www.bartscancer.london/staff/dr-lovorka-stojic/) Barts Centre CRUK, UK
 - [Alain Laederach](https://ribosnitch.bio.unc.edu/) UNC Chapel Hill, USA
 - [Madeline Sherlock](https://profiles.ucdenver.edu/display/20414874) New York Structural Biology Center, USA
 - [Peter Stadler](http://www.bioinf.uni-leipzig.de/) Universität Leipzig, Germany
@@ -28,3 +27,4 @@ The SAB oversees the progress of the project during annual meetings.
 - [Manja Marz](http://www.rna.uni-jena.de/members/manja-marz/) Friedrich Schiller University Jena, Germany *SAB member between 2017-2022*
 - [Yiliang Ding](https://www.jic.ac.uk/people/yilliang-ding/) John Innes Centre, UK *SAB member between 2021-2023*
 - [Yann Ponty](http://www.lix.polytechnique.fr/~ponty/) CNRS École Politechnique, France *SAB member between 2019-2024*
+- [Lovorka Stojic](https://www.bartscancer.london/staff/dr-lovorka-stojic/) Barts Centre CRUK, UK, *SAB member between 2020-2025*