Merge pull request #171 from code0-tech/renovate/pbjson-0.x

Update Rust crate pbjson to 0.9.0

Author: raphael-goetz

build/rust/Cargo.lock

@@ -15,7 +15,7 @@ prost = "0.14.0"
 tonic = "0.14.0"
 serde_json = "1.0.138"
 tonic-prost = "0.14.0"
-pbjson = "0.8.0"
+pbjson = "0.9.0"
 pbjson-types = "0.9.0"
 
 [lib]