cleanup: turn a warning into an error #135

Job	Run time
fetch-version / fetch-version	20s
build-dev-packages / build-wasm-package	10m 2s
build-dev-packages / build-musl-package	42m 33s
build-dev-packages / build-modern-bpf-skeleton	3m 12s
build-dev-packages-arm64 / build-modern-bpf-skeleton	2m 58s
build-dev-packages-arm64 / build-musl-package	0s
build-dev-packages-arm64 / build-wasm-package	0s
build-dev-packages-arm64 / build-packages	42m 23s
build-dev-packages / build-packages	43m 14s
test-dev-packages-arm64 / test-packages	2m 35s
test-dev-packages (static) / test-packages	1m 39s
test-dev-packages / test-packages	2m 43s
publish-dev-packages / publish-packages	5m 3s
publish-dev-packages / publish-packages-deb	6m 0s
build-dev-docker / build-docker	7m 36s
build-dev-docker-arm64 / build-docker	7m 37s
publish-dev-docker / publish-docker	5m 47s
	3h 3m 42s

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