fixed comma

Author: daniel-sanche

owlbot.py

@@ -27,7 +27,7 @@
 # Add templated files
 # ----------------------------------------------------------------------------
 templated_files = common.py_library(
-    unit_test_python_versions=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+    unit_test_python_versions=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"],
     system_test_python_versions=["3.9", "3.14"],
     cov_level=99,
     intersphinx_dependencies={