Merge pull request #2080 from wilzbach/codecov-informational

[Codecov] Replace threshold:5 with informational:true
merged-on-behalf-of: Andrei Alexandrescu <andralex@users.noreply.github.com>

Author: dlang-bot

.codecov.yml

@@ -37,7 +37,7 @@ coverage:
     project: off
     patch:
       default:
-        threshold: 5
+        informational: true
     changes: off
 
   notify: