chore(ci): fix docker cache overwriting #2564

Job	Run time
fmt	10s
build-wasm	3m 20s
docs	4m 35s
clippy (celestia-proto)	41s
clippy (celestia-types)	42s
test (celestia-proto)	1m 34s
unused dependencies	1m 50s
clippy (celestia-rpc)	41s
wasm-test (celestia-proto, proto)	1m 33s
test (celestia-types)	47s
clippy (celestia-grpc)	2m 18s
wasm-test (celestia-types, types, --features=wasm-bindgen)	2m 11s
test (celestia-rpc)	3m 17s
clippy (celestia-grpc-macros)	1m 1s
wasm-test (celestia-rpc, rpc, --features=wasm-bindgen)	42s
test (celestia-grpc)	42s
clippy (lumina-node)	44s
wasm-test (celestia-grpc, grpc)	2m 10s
test (celestia-grpc-macros)	1m 7s
clippy (lumina-node-uniffi)	3m 21s
wasm-test (lumina-node, node)	3m 39s
test (lumina-node)	39s
clippy (lumina-node-wasm)	40s
wasm-test (lumina-node-wasm, node-wasm, --release)	3m 49s
test (lumina-node-uniffi)	42s
clippy (lumina-cli)	46s
test (lumina-node-wasm)	1m 5s
test (lumina-cli)	40s
Required checks	1s
	45m 27s

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