Ignore SimpleCov coverage/ output directory

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Zack Koppert <zkoppert@github.com>

Author: zkoppert

.gitignore

@@ -8,3 +8,4 @@ vendor/
 .DS_Store
 .venv
 venv
+coverage/