Upgrade rust/crates/async-task to 4.2.0

Test: make
Change-Id: I9bd204c7a0c0fff8c30be654567e59561b9a7871
diff --git a/Cargo.toml b/Cargo.toml
index f563dc6..7847dd8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,14 +13,24 @@
 edition = "2018"
 rust-version = "1.39"
 name = "async-task"
-version = "4.1.0"
+version = "4.2.0"
 authors = ["Stjepan Glavina <[email protected]>"]
 exclude = ["/.*"]
 description = "Task abstraction for building executors"
-keywords = ["futures", "task", "executor", "spawn"]
-categories = ["asynchronous", "concurrency", "no-std"]
+keywords = [
+    "futures",
+    "task",
+    "executor",
+    "spawn",
+]
+categories = [
+    "asynchronous",
+    "concurrency",
+    "no-std",
+]
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/smol-rs/async-task"
+
 [dev-dependencies.atomic-waker]
 version = "1"