Update Cargo.toml

Author: 38

plotters/Cargo.toml

@@ -106,7 +106,7 @@ deprecated_items = [] # Keep some of the deprecated items for backward compatibi
 itertools = "0.10.0"
 criterion = "0.3.4"
 rayon = "1.5.1"
-serde_json = "1.0.64"
+serde_json = "1.0.82"
 serde = "1.0.138"
 serde_derive = "1.0.138"