build(deps): bump actions/stale from 8 to 9 #171

Job	Run time
Run unit tests	49s
Run unit tests without uci support	29s
Build aarch64_cortex-a53	1m 45s
Build aarch64_cortex-a72	1m 29s
Build aarch64_generic	1m 36s
Build arm_cortex-a7_neon-vfpv4	1m 15s
Build arm_cortex-a9_vfpv3-d16	1m 4s
Build arm_cortex-a15_neon-vfpv4	1m 25s
Build i386_pentium4	1m 1s
Build i386_pentium-mmx	1s
Build mips_24kc	1s
Build mipsel_24kc	1s
Build powerpc_464fp	1s
Build powerpc_8548	1s
Build x86_64	1s
	10m 59s

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