chore(kms-connector): add mpc-devs as codeowners (#1819)

Author: eudelins-zama

.github/CODEOWNERS

@@ -11,7 +11,7 @@
 /host-contracts/ @zama-ai/fhevm-gateway
 /protocol-contracts/ @zama-ai/fhevm-gateway
 /library-solidity/ @zama-ai/fhevm-gateway
-/kms-connector/ @zama-ai/fhevm-gateway @dartdart26
+/kms-connector/ @zama-ai/mpc-devs @zama-ai/fhevm-gateway @dartdart26
 
 # Coprocessor Team ownership
 /coprocessor/ @zama-ai/fhevm-coprocessor