ci: ignore merge commits in cog checks

cog.toml

@@ -1,4 +1,5 @@
 branch_whitelist = [ "main" ]
+ignore_merge_commits = true
 
 # A list of command to run BEFORE creating a version.
 # All change generated by those commands will be committed with the generated version commit.

tests/cog_tests/verify.rs

@@ -91,7 +91,7 @@ fn verify_with_unknown_commit_type_fails() -> Result<()> {
     Ok(())
 }
 
-#[test]
+#[sealed_test]
 fn should_not_ignore_merge_commit_by_default() -> Result<()> {
     // Arrange
     let message = "Merge toto into titi";