Auto merge of #16088 - mbrubeck:always-be-updating, r=emilio

Update parking_lot_core and smallvec

- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because they update third-party code only

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components/script/Cargo.toml

@@ -81,7 +81,7 @@ servo_geometry = {path = "../geometry" }
 servo_rand = {path = "../rand"}
 servo_url = {path = "../url", features = ["servo"] }
 servo-websocket = "0.18"
-smallvec = "0.1"
+smallvec = "0.3"
 style = {path = "../style"}
 style_traits = {path = "../style_traits"}
 time = "0.1.12"