chore(ci): fix docker cache overwriting #2581

Job	Run time
build-docker-cache	10s
build-wasm	1m 51s
docs	3m 55s
clippy (celestia-proto)	1m 1s
clippy (celestia-types)	1m 34s
fmt	4s
unused dependencies	1m 39s
clippy (celestia-rpc)	1m 43s
test (celestia-proto)	33s
clippy (celestia-grpc)	1m 29s
test (celestia-types)	27s
wasm-test (celestia-proto, proto)	33s
test (celestia-rpc)	25s
wasm-test (celestia-types, types, --features=wasm-bindgen)	29s
test (celestia-grpc)	35s
clippy (celestia-grpc-macros)	21s
wasm-test (celestia-rpc, rpc, --features=wasm-bindgen)	29s
test (celestia-grpc-macros)	25s
clippy (lumina-node)	2m 13s
wasm-test (celestia-grpc, grpc)	26s
test (lumina-node)	17s
clippy (lumina-node-uniffi)	2m 8s
wasm-test (lumina-node, node)	34s
test (lumina-node-uniffi)	13s
clippy (lumina-node-wasm)	1m 12s
wasm-test (lumina-node-wasm, node-wasm, --release)	37s
test (lumina-node-wasm)	24s
clippy (lumina-cli)	1m 23s
test (lumina-cli)	13s
Required checks	1s
	27m 24s

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