chore(ci): fix docker cache overwriting #2582

Job	Run time
test (celestia-proto)	21s
clippy (celestia-proto)	1m 15s
test (celestia-types)	24s
clippy (celestia-types)	1m 28s
test (celestia-rpc)	37s
clippy (celestia-rpc)	1m 48s
wasm-test (celestia-proto, proto)	29s
test (celestia-grpc)	33s
clippy (celestia-grpc)	1m 25s
wasm-test (celestia-types, types, --features=wasm-bindgen)	27s
test (celestia-grpc-macros)	35s
clippy (celestia-grpc-macros)	23s
wasm-test (celestia-rpc, rpc, --features=wasm-bindgen)	27s
build-docker-cache	10s
test (lumina-node)	27s
clippy (lumina-node)	2m 15s
wasm-test (celestia-grpc, grpc)	26s
test (lumina-node-uniffi)	56s
clippy (lumina-node-uniffi)	2m 8s
build-wasm	1m 47s
wasm-test (lumina-node, node)	25s
clippy (lumina-node-wasm)	1m 12s
test (lumina-node-wasm)	30s
wasm-test (lumina-node-wasm, node-wasm, --release)	26s
clippy (lumina-cli)	1m 26s
test (lumina-cli)	24s
docs	4m 9s
fmt	6s
unused dependencies	1m 41s
Required checks	1s
	28m 41s

Provide feedback