chore: update CODEOWNERS (autowarefoundation#136)

* chore: update CODEOWNERS

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* style(pre-commit): autofix

---------

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Author: 3 people

.github/CODEOWNERS

@@ -4,3 +4,4 @@ common/autoware_node/** mfc@autoware.org @autowarefoundation/autoware-core-globa
 demos/autoware_test_node/** mfc@autoware.org @autowarefoundation/autoware-core-global-codeowners
 
 ### Copied from .github/CODEOWNERS-manual ###
+.github/** @autowarefoundation/autoware-core-global-codeowners