Update kotlin protos for SCW signature (#221)

* update to generate appropriate kotlin protos

* fix: kotlin signature

* git gradle fixed

* remove space

dev/kotlin/generate

@@ -48,4 +48,6 @@ docker run --platform linux/x86_64 --rm -i -v${PWD}:/code xmtp/protoc-kotlin \
   mls/message_contents/group_metadata.proto \
   mls/message_contents/group_mutable_metadata.proto \
   mls/message_contents/content.proto \
-  mls/message_contents/transcript_messages.proto
+  mls/message_contents/transcript_messages.proto \
+  identity/associations/signature.proto \
+  identity/associations/association.proto