upgrade FindOrFetchBoost via https://github.com/ValeevGroup/kit-cmake… #364

Job	Run time
macos-latest: clang++ Release linalg=netlib	4m 17s
macos-latest: clang++ Release linalg=vendor	3m 34s
ubuntu-20.04: /usr/bin/g++-9 Release linalg=netlib	3m 17s
ubuntu-20.04: /usr/bin/g++-9 Release linalg=vendor	4m 37s
macos-latest: clang++ Debug linalg=netlib	7m 30s
macos-latest: clang++ Debug linalg=vendor	4m 35s
ubuntu-20.04: /usr/bin/g++-9 Debug linalg=netlib	2m 45s
ubuntu-20.04: /usr/bin/g++-9 Debug linalg=vendor	5m 16s
	35m 51s

Provide feedback