Update Rust crate toml to 0.8

Author: renovate[bot]

Cargo.lock

@@ -83,7 +83,7 @@ termcolor.workspace = true
 thiserror.workspace = true
 threadpool = "1"
 tokio = { workspace = true, optional = true }
-toml = "0.7"
+toml = "0.8"
 tracing-opentelemetry = { workspace = true, optional = true }
 tracing-subscriber = { workspace = true, optional = true, features = [
     "env-filter",