update edition to 2021

Petre Eftime · petreeftime · commit 6da07f7bae09 · 2022-09-13T16:30:49.000+01:00
Signed-off-by: Petre Eftime &lt;epetre@amazon.com&gt;
diff --git a/Cargo.toml b/Cargo.toml
@@ -7,7 +7,7 @@ repository = "https://github.com/rust-vmm/seccompiler"
 readme = "README.md"
 keywords = ["seccomp", "jail", "sandbox"]
 license = "Apache-2.0 OR BSD-3-Clause"
-edition = "2018"
+edition = "2021"
 
 [features]
 json = ["serde", "serde_json"]
