add Simon Kojima to CITATION.cff (#857)

* add Simon Kojima to CITATION.cff

* move Simon Kojima just before Jordy

---------

Co-authored-by: Simon Kojima <[email protected]>

Author: simonkojima

CITATION.cff

@@ -54,6 +54,9 @@ authors:
 - family-names: "Andreev"
   given-names: "Anton"
   orcid: "https://orcid.org/000-0002-4466-4525"
+- family-names: "Kojima"
+  given-names: "Simon"
+  orcid: "https://orcid.org/0000-0002-6509-7363"
 - family-names: "Thielen"
   given-names: "Jordy"
   orcid: "https://orcid.org/0000-0002-6264-0367"