build(deps): bump actions/checkout from 3 to 4 #14

Job	Run time
generate_target_matrix	4s
build_firmware (ath79-generic)	1m 1s
build_firmware (ath79-mikrotik)	1m 0s
build_firmware (ath79-nand)	1m 2s
build_firmware (bcm27xx-bcm2708)	1m 0s
build_firmware (bcm27xx-bcm2709)	56s
build_firmware (bcm27xx-bcm2710)	52s
build_firmware (bcm27xx-bcm2711)	1m 1s
build_firmware (ipq40xx-generic)	1m 1s
build_firmware (ipq40xx-mikrotik)	54s
build_firmware (ipq806x-generic)	1m 3s
build_firmware (kirkwood-generic)	1m 2s
build_firmware (lantiq-xrx200)	1m 0s
build_firmware (lantiq-xway)	1m 1s
build_firmware (mediatek-filogic)	1m 0s
build_firmware (mediatek-mt7622)	59s
build_firmware (mpc85xx-p1010)	1m 0s
build_firmware (mpc85xx-p1020)	1m 0s
build_firmware (mvebu-cortexa9)	1m 1s
build_firmware (ramips-mt7620)	56s
build_firmware (ramips-mt7621)	1s
build_firmware (ramips-mt76x8)	54s
build_firmware (realtek-rtl838x)	1s
build_firmware (rockchip-armv8)	1s
build_firmware (sunxi-cortexa7)	1s
build_firmware (x86-64)	1s
build_firmware (x86-generic)	1s
build_firmware (x86-geode)	1s
build_firmware (x86-legacy)	1s
create_release	1s
	19m 56s

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