chore: exclude codeowners template (#1600)

diff --git a/owlbot.py b/owlbot.py
index 1ebdf88..0d995c1 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -30,7 +30,7 @@
 s.move(templated_files / '.trampolinerc')  # config file for trampoline_v2
 
 # Also move issue templates
-s.move(templated_files / '.github')
+s.move(templated_files / '.github', excludes=['CODEOWNERS'])
 
 # Move scripts folder needed for samples CI
 s.move(templated_files / 'scripts')