update coverage score

The coverage score is updated because of the new Rust version (1.52.1).

Signed-off-by: Andreea Florescu <[email protected]>

Author: andreeaflorescu

coverage_config_x86_64.json

@@ -1,5 +1,5 @@
 {
-  "coverage_score": 87.5,
+  "coverage_score": 87.7,
   "exclude_path": "",
   "crate_features": ""
 }