Add tolerations for targetless agent. #13988

Job	Run time
towncrier_check	7s
changed_files	6s
check_if_release_branch	1s
build mirrord CLI	0s
lint	13m 12s
check-rust-docs	4m 29s
integration_tests	9m 43s
lint_markdown	0s
macos_tests	28m 44s
test_agent	3m 26s
test_agent_image	6m 32s
test_cli_image	6m 6s
e2e (docker)	13m 19s
intellij_e2e_on_release_branch	0s
vscode_e2e_on_release_branch	0s
e2e (containerd)	13m 50s
ci	1s
	1h 39m 36s

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