Update MAINTAINERS.yaml

Author: derberg

MAINTAINERS.yaml

@@ -191,7 +191,7 @@
   twitter: ldussart
   availableForHire: false
   company: zatsit
-  isTscMember: true
+  isTscMember: false
   repos:
     - avro-schema-parser
   githubID: 5501911
@@ -281,7 +281,7 @@
   linkedin: nektarios-fifes-372740220
   slack: U01SE93Q48N
   availableForHire: true
-  isTscMember: true
+  isTscMember: false
   repos:
     - simulator
   githubID: 61620751