Update execs_directs.json

Author: esyw

frontend/src/assets/execs_directs.json

@@ -119,7 +119,7 @@
             ],
             "Student Network": [
                "Sachin Krishnamoorthy",
-               "Shrey Somaiya"
+               "Shrey Sudhir"
             ],
             "Workshops": [
                "Michael Gribben"
@@ -197,7 +197,7 @@
                "Martin Minh Le"
             ],
             "Arc Delegate": [
-               "Raiyan Zubair"
+               "Arsha Abayasingam (replacing Raiyan Zubair)"
             ]
          },
          "Directors": {