add support for latest versions of gmp, isl, mpc, and mpfr

hashes/gmp-6.3.0.tar.xz.sha1

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+b4043dd2964ab1a858109da85c44de224384f352  gmp-6.3.0.tar.xz

hashes/isl-0.27.tar.xz.sha1

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+8778bdabc1fbebe392564440c1ebbaaa45cdaf85  isl-0.27.tar.xz

hashes/mpc-1.3.1.tar.gz.sha1

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+bac1c1fa79f5602df1e29e4684e103ad55714e02  mpc-1.3.1.tar.gz

hashes/mpfr-4.2.2.tar.xz.sha1

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+a63a264b273a652e27518443640e69567da498ce  mpfr-4.2.2.tar.xz