MNT: Add Lea Waller and Gilles de Hollander to contributors

Author: effigies

.zenodo.json

@@ -74,6 +74,18 @@
       "name": "Thompson, William H.",
       "orcid": "0000-0002-0533-6035",
       "type": "Researcher"
+    },
+    {
+      "affiliation": "Charite Universitatsmedizin Berlin, Germany",
+      "name": "Waller, Lea",
+      "orcid": "0000-0002-3239-6957",
+      "type": "Researcher"
+    },
+    {
+      "affiliation": "University of Zurich, Switzerland",
+      "name": "de Hollander, Gilles",
+      "orcid": "0000-0003-1988-5091",
+      "type": "Researcher"
     }
   ],
   "keywords": [