chore: bump version to 1.3.3 (#99) #396

Job	Run time
macos-latest, cmake, gcc, easy backend	31s
macos-latest, cmake, gcc, gmp backend	36s
macos-latest, cmake, clang, easy backend	1m 5s
macos-latest, cmake, clang, gmp backend	30s
macos-latest, autotools, gcc, easy backend	1m 2s
macos-latest, autotools, gcc, gmp backend	1m 50s
macos-latest, autotools, clang, easy backend	1m 9s
macos-latest, autotools, clang, gmp backend	1m 13s
ubuntu-20.04, cmake, gcc, easy backend	1m 31s
ubuntu-20.04, cmake, gcc, gmp backend	1m 33s
ubuntu-20.04, cmake, clang, easy backend	1m 34s
ubuntu-20.04, cmake, clang, gmp backend	1m 29s
ubuntu-20.04, autotools, gcc, easy backend	2m 15s
ubuntu-20.04, autotools, gcc, gmp backend	2m 9s
ubuntu-20.04, autotools, clang, easy backend	2m 12s
ubuntu-20.04, autotools, clang, gmp backend	2m 31s
	23m 10s

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