test: add missing output to tests

git-cliff-core/src/changelog.rs

@@ -652,6 +652,7 @@ mod test {
 					replace:         Some(String::from("exciting")),
 					replace_command: None,
 				}]),
+				output:         None,
 			},
 			git:       GitConfig {
 				conventional_commits:     Some(true),

git-cliff-core/tests/integration_test.rs

@@ -41,6 +41,7 @@ fn generate_changelog() -> Result<()> {
 		footer:         Some(String::from("eoc - end of changelog")),
 		trim:           None,
 		postprocessors: None,
+		output:         None,
 	};
 	let git_config = GitConfig {
 		conventional_commits:     Some(true),