Add Tomas to lang-ops

Due to his consistent and valuable work in supporting the operations
of the lang team, the lang-ops team is pleased to welcome Tomas.

Author: traviscross

teams/lang-ops.toml

@@ -5,6 +5,7 @@ subteam-of = "lang"
 leads = ["traviscross"]
 members = [
     "traviscross",
+    "tomassedovic",
 ]
 alumni = [
 ]