fix(tx_search): Set `cometbft-db` to `v0.12` to fix tx_search issue (… #1485

Job	Run time
(Mainnet) Build and Push ECS Services / call-build-and-push-ecs-service-comlink / (comlink) Build and Push	4m 36s
(Mainnet) Build and Push ECS Services / call-build-and-push-ecs-service-ender / (ender) Build and Push	4m 10s
(Mainnet) Build and Push ECS Services / call-build-and-push-auxo-lambda / (auxo) Build and Push Lambda	5m 30s
(Mainnet) Build and Push ECS Services / call-build-and-push-bazooka-lambda / (bazooka) Build and Push Lambda	5m 49s
(Mainnet) Build and Push ECS Services / call-build-and-push-ecs-service-roundtable / (roundtable) Build and Push	4m 7s
(Mainnet) Build and Push ECS Services / call-build-and-push-ecs-service-socks / (socks) Build and Push	4m 10s
(Mainnet) Build and Push ECS Services / call-build-and-push-vulcan / (vulcan) Build and Push	4m 10s
	32m 32s

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