build(deps): bump serde_json from 1.0.75 to 1.0.78 (#1440)

(cherry picked from commit d69aa90)
Signed-off-by: Oliver Gould <ver@buoyant.io>

Author: dependabot[bot]

Cargo.lock

@@ -1984,9 +1984,9 @@ checksum = "f12d06de37cf59146fbdecab66aa99f9fe4f78722e3607577a5375d66bd0c913"
 
 [[package]]
 name = "serde_json"
-version = "1.0.75"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c059c05b48c5c0067d4b4b2b4f0732dd65feb52daf7e0ea09cd87e7dadc1af79"
+checksum = "d23c1ba4cf0efd44be32017709280b32d1cea5c3f1275c3b6d9e8bc54f758085"
 dependencies = [
  "itoa 1.0.1",
  "ryu",