Prod sec co-owns keystore

Author: connorwstein

.github/CODEOWNERS

@@ -7,7 +7,7 @@
 
 * @smartcontractkit/foundations
 
-/keystore @connorwstein @pavel-rakov @smartcontractkit/prodsec-public
+/keystore @smartcontractkit/prodsec-public @smartcontractkit/foundations
 /pkg/beholder/ @smartcontractkit/data-tooling
 /pkg/capabilities/v2/chain-capabilities @smartcontractkit/keystone @smartcontractkit/capabilities-team @smartcontractkit/bix-framework
 /pkg/chains/evm @smartcontractkit/bix-framework