CLSA-2024-1731956848 ImageMagick: Fix of 3 CVEs

CVE-2020-27751: fix shift exponent that is too large for 64-bit type at magick/quantum-export.c - CVE-2020-27757: fix outside the range of representable values of type 'unsigned long long' bug at magick/quantum-private.h - CVE-2020-27768: fix outside the range of representable values of type...