bump emulator to remote signer version with unlocking #85

Job	Run time
go_sec_covenant_signer	1m 13s
docker_pipeline / prepare-metadata	1s
lint_test / build	1m 2s
lint_test / lint	2m 29s
lint_test / unit-tests	3m 20s
lint_test / check-mock-gen	0s
lint_test / gosec	2m 30s
lint_test / integration-tests	9m 17s
docker_pipeline / docker_build (linux/amd64, ubuntu-24.04)	3m 12s
docker_pipeline / docker_build (linux/arm64, ubuntu-24.04-arm64)	2m 46s
docker_pipeline / merge_ecr	0s
docker_pipeline / merge_dockerhub	0s
	25m 50s

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