Bump smallvec from 1.6.0 to 1.6.1

Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](https://github.com/servo/rust-smallvec/compare/v1.6.0...v1.6.1)

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -568,9 +568,9 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a55ca5f3b68e41c979bf8c46a6f1da892ca4db8f94023ce0bd32407573b1ac0"
+checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
 [[package]]
 name = "spin"