Make code coverage informational

Signed-off-by: Christian Wolf <github@christianwolf.email>

.codecov.yml

@@ -5,6 +5,13 @@ coverage:
   precision: 2
   round: down
   range: "70...100"
+  status:
+    project:
+      default:
+        informational: true
+    patch:
+      default:
+        informational: true
 
 parsers:
   gcov: