chore(home-assistant): no longer depend on chrono-tz

Cargo.lock

@@ -648,7 +648,6 @@ version = "0.1.0"
 dependencies = [
  "arbitrary-value",
  "chrono",
- "chrono-tz",
  "derive_more",
  "emitter-and-signal",
  "once_cell",

home-assistant/Cargo.toml

@@ -10,7 +10,6 @@ tracing = ["dep:tracing"]
 [dependencies]
 arbitrary-value = { path = "../arbitrary-value", features = ["pyo3"] }
 chrono = { workspace = true }
-chrono-tz = { workspace = true }
 derive_more = { workspace = true, features = [
     "display",
     "from",