Limit serde_json dev dep to fix Rust 1.22 build

stevenroose · stevenroose · commit 715aa7fc9ff5 · 2020-02-14T17:08:58.000Z
diff --git a/Cargo.toml b/Cargo.toml
@@ -24,4 +24,4 @@ optional = true
 
 [dev-dependencies]
 rand = "0.6.5"
-serde_json = "1"
+serde_json = "<=1.0.44"
