mirrord policy for enforcing header pattern #14060

Job	Run time
towncrier_check	7s
changed_files	6s
check_if_release_branch	1s
build mirrord CLI	0s
lint	2m 1s
check-rust-docs	1m 8s
integration_tests	6m 27s
lint_markdown	0s
macos_tests	11m 31s
test_agent	3m 15s
test_agent_image	6m 39s
test_cli_image	6m 1s
e2e (docker)	4m 41s
vscode_e2e_on_release_branch	0s
intellij_e2e_on_release_branch	0s
e2e (containerd)	4m 40s
ci	1s
	46m 38s

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