Added Cillian De Gascun as contributor.

Author: carmeniborra

_data/CONTRIBUTORS.yaml

@@ -375,4 +375,15 @@ Enrique Sapena Ventura:
   email: enrique.sapena@isciii.es
   orcid: 0000-0003-4554-9040
   role: editor
-  affiliation: ISCIII / ELIXIR-ES
+  affiliation: ISCIII / ELIXIR-ES
+Carmen Iborra:
+  git: carmeniborra
+  email: carmen.iborra@externos.isciii.es
+  orcid: 0009-0009-3668-5850
+  role: editor
+  affiliation: ISCIII
+Cillian De Gascun:
+  git:
+  email: cillian.degascun@ucd.ie
+  orcid: 0000-0001-9208-4325
+  affiliation: UCD National Virus Reference Laboratory