Update Rust crate parking_lot to v0.12.1 (#4854)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

Cargo.lock

@@ -67,7 +67,7 @@ lettre = { version = "=0.10.0-rc.6", default-features = false, features = ["file
 minijinja = "=0.15.0"
 moka = "=0.8.5"
 oauth2 = { version = "=4.2.0", default-features = false, features = ["reqwest"] }
-parking_lot = "=0.12.0"
+parking_lot = "=0.12.1"
 prometheus = { version = "=0.13.1", default-features = false }
 rand = "=0.8.5"
 reqwest = { version = "=0.11.10", features = ["blocking", "gzip", "json"] }