Fix checksum creation: #113

Job	Run time
Prepare matrix JSON	6s
LinuxKit containers for arm64	14s
Kernel hook-latest-lts-amd64	16s
LinuxKit containers for amd64	12s
Kernel armbian-uefi-x86-edge	17s
Kernel hook-default-amd64	10s
Kernel armbian-uefi-arm64-edge	12s
Kernel armbian-rockchip64-edge	13s
Kernel armbian-rk35xx-vendor	19s
Kernel hook-latest-lts-arm64	11s
Kernel armbian-rk3588-edge	12s
Kernel armbian-bcm2711-current	13s
Kernel hook-default-arm64	11s
Kernel armbian-meson64-edge	19s
Hook hook-latest-lts-amd64	52s
Hook armbian-uefi-x86-edge	41s
Hook hook-default-amd64	48s
Hook armbian-uefi-arm64-edge	40s
Hook armbian-rockchip64-edge	36s
Hook armbian-rk35xx-vendor	37s
Hook hook-latest-lts-arm64	57s
Hook armbian-rk3588-edge	37s
Hook armbian-bcm2711-current	36s
Hook hook-default-arm64	56s
Hook armbian-meson64-edge	36s
Publish all Hooks to GitHub Releases	0s
Publish all Hooks to GitHub Releases for a tag	0s
	11m 1s

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