Disables codecov commit status (#615)

We only use codecov as a UI. It is alarming to see red on commit, so
disabling this.

Signed-off-by: Adrian Cole <adrian@tetrate.io>

codecov.yml

@@ -1,5 +1,9 @@
 # Codecov for main is visible here https://app.codecov.io/gh/tetratelabs/wazero
 
-# We use codecov only as a UI, so we disable PR comments.
+# We use codecov only as a UI, so we disable PR comments and commit status.
 # See https://docs.codecov.com/docs/pull-request-comments
 comment: false
+coverage:
+  status:
+    project: off
+    patch: off