Add bootloader hashes from the Sanguino Arduino core repo #1472

Job	Run time
linux-x86_64	1m 26s
linux (i386, i686, i686-linux-gnu, i386-linux-gnu)	1m 32s
mingw (mingw32, i686)	4m 53s
linux (armhf, armhf, arm-linux-gnueabihf, arm-linux-gnueabihf)	1m 41s
macos-x86_64	2m 54s
mingw (mingw64, x86_64)	4m 20s
linux (arm64, aarch64, aarch64-linux-gnu, aarch64-linux-gnu)	1m 40s
msvc (x86, Win32)	2m 35s
msvc (x64, x64)	2m 40s
msvc (arm64, ARM64)	2m 38s
	26m 19s

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