ci: disable codecov comments on zero diff

Also disables Go codecov to avoid spurious diffs due to
non-deterministic codecov reports

.circleci/config.yml

@@ -770,9 +770,10 @@ jobs:
           key: golang-build-cache-<<parameters.module>>
           paths:
             - "/root/.cache/go-build"
-      - run:
-          name: upload coverage
-          command: codecov --verbose --clean --flags bedrock-go-tests
+      # TODO(CLI-148): Fix codecov
+      #- run:
+          #name: upload coverage
+          #command: codecov --verbose --clean --flags bedrock-go-tests
       - store_test_results:
           path: /tmp/test-results
 

codecov.yml

@@ -3,7 +3,7 @@ codecov:
 comment:
   layout: "diff, flags, files"
   behavior: default
-  require_changes: false
+  require_changes: true
   flags:
     - contracts-bedrock-tests