update deps and cleanup unused halo code #427

Job	Run time
🔍 Files Changed / Changed Files	5s
⚙️ Checks (Optional) / Standard Library Tests (GraalVM CE) (macos, amd64)	38m 12s
⚙️ Checks / Engine (GraalVM CE) (windows, amd64)	14m 53s
⚙️ Checks (Optional) / JVM Tests (GraalVM CE) (macos, amd64)	38m 21s
⚙️ Checks (Optional) / Engine (GraalVM CE) (macos, amd64)	38m 11s
⚙️ Checks / Engine (GraalVM CE) (linux, amd64)	17m 48s
⚙️ Checks / JVM Tests (GraalVM CE) (linux, amd64)	16m 25s
⚙️ Checks / Standard Library Tests (GraalVM CE) (linux, amd64)	22m 3s
⚙️ Checks / JVM Tests (GraalVM CE) (windows, amd64)	38m 4s
⚙️ Checks / Standard Library Tests (GraalVM CE) (windows, amd64)	23m 9s
⚙️ Checks / Verify License Packages (linux, amd64)	5m 33s
Engine Required Checks	1s
	4h 12m 45s

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