[github-actions] fix NCP border routing setup #7046

Job	Run time
check (Debug, mDNSResponder)	24m 11s
check (Debug, avahi)	20m 6s
check (Release, mDNSResponder)	24m 4s
check (Release, avahi)	20m 9s
pretty	1m 21s
rest-check (rest-off)	23m 35s
rest-check	23m 59s
package	4m 19s
scan-build	1m 34s
script-check	4m 21s
simulation	6m 44s
	2h 34m 23s

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