Update Rust crate once_cell to v1.16.0 (#5393)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Cargo.lock

@@ -91,7 +91,7 @@ claims = "=0.7.1"
 conduit-test = "=0.10.0"
 hyper-tls = "=0.5.0"
 insta = { version = "=1.21.0", features = ["redactions", "yaml"] }
-once_cell = "=1.15.0"
+once_cell = "=1.16.0"
 tokio = "=1.21.2"
 tower-service = "=0.3.2"