feat: Change health connection to SSE #2823

Job	Run time
build-with-samply / Cargo fmt check	0s
build-with-samply / Security, License Check	26s
build-with-samply / Build (amd64)	2m 7s
build-with-samply / Build (amd64, sockets)	3m 6s
build-with-samply / Build (arm64)	2m 46s
build-with-samply / Build (arm64, sockets)	2m 41s
build-with-samply / Test	1m 6s
build-with-samply / Test (sockets)	1m 3s
build-with-samply / Docker (beam-proxy) / Tidy GHCR images (samply/beam-proxy)	26s
build-with-samply / Docker (beam-broker) / Tidy GHCR images (samply/beam-broker)	24s
build-with-samply / Docker (beam-proxy) / Dockerize (beam-proxy)	1m 10s
build-with-samply / Docker (beam-broker) / Dockerize (beam-broker)	1m 15s
build-with-samply / Docker (beam-broker, sockets) / Dockerize (beam-broker) (-sockets)	1m 14s
build-with-samply / Docker (beam-proxy, sockets) / Dockerize (beam-proxy) (-sockets)	52s
build-with-samply / Docker (beam-broker, sockets) / Tidy GHCR images (samply/beam-broker)	22s
build-with-samply / Docker (beam-proxy, sockets) / Tidy GHCR images (samply/beam-proxy)	21s
	19m 19s

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