Merge pull request rust-lang#4533 from rust-lang/dependabot/cargo/tests/deps/slab-0.4.11

Bump slab from 0.4.10 to 0.4.11 in /tests/deps

Author: RalfJung

src/tools/miri/tests/deps/Cargo.lock

@@ -296,9 +296,9 @@ dependencies = [
 
 [[package]]
 name = "slab"
-version = "0.4.10"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
+checksum = "7a2ae44ef20feb57a68b23d846850f861394c2e02dc425a50098ae8c90267589"
 
 [[package]]
 name = "socket2"