Merge pull request #388 from gitext-rs/renovate/downcast-rs-2.x

chore(deps): Update Rust crate downcast-rs to v2

Author: epage

Cargo.lock

@@ -137,7 +137,7 @@ ignore = "0.4.22"
 bstr = "1.9.1"
 maplit = "1.0.2"
 petgraph = "0.7.0"
-downcast-rs = "1.2.1"
+downcast-rs = "2.0.0"
 names = { version = "0.14.0", default-features = false }
 elsa = "1.10.0"
 shlex = "1.3.0"