ci(github): Fix the number of CodeCov action calls after which to com…

…ment

See [1].

[1]: https://docs.codecov.com/docs/pull-request-comments#after_n_builds

Signed-off-by: Sebastian Schuberth <sebastian@doubleopen.org>

.codecov.yml

@@ -1,6 +1,6 @@
 comment:
   # Keep this in sync with the number of codecov-action calls.
-  after_n_builds: 4
+  after_n_builds: 3
 coverage:
   status:
     project: