Auto merge of #28860 - servo:dependabot/cargo/atomic_refcell-0.1.8, r=jdm

Bump atomic_refcell from 0.1.7 to 0.1.8

Bumps [atomic_refcell](https://github.com/bholley/atomic_refcell) from 0.1.7 to 0.1.8.
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Cargo.lock

@@ -216,9 +216,9 @@ dependencies = [
 
 [[package]]
 name = "atomic_refcell"
-version = "0.1.7"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "681b971236e0f76b20fcafca0236b8718c9186ee778d67cd78bd5f28fd85427f"
+checksum = "73b5e5f48b927f04e952dedc932f31995a65a0bf65ec971c74436e51bf6e970d"
 
 [[package]]
 name = "atty"