fix(owlbot): align template and post-processor formatting

Author: blakeli0

java-health/owlbot.py

@@ -33,6 +33,5 @@
         "java.header",
         "license-checks.xml",
         "renovate.json",
-        ".gitignore",
-    ],
-)
+        ".gitignore"
+])

sdk-platform-java/hermetic_build/library_generation/templates/owlbot.py.j2

@@ -24,7 +24,9 @@ java.common_templates(
     monorepo=True,{% if template_excludes %}
     excludes=[
     {%- for exclude in template_excludes %}
-        "{{ exclude }}",
+        "{{ exclude }}"{% if not loop.last %},{% endif %}
     {%- endfor %}
-    ],{% endif %}
-){% endif %}
+])
+{%- endif %}
+)
+{%- endif %}