[committed] Testsuite, darwin: account for macOS 13 and 14

[FX Coudert via Gcc-patches]

Committed as obvious, making gcc.dg/darwin-minversion-link.c pass on macOS 13 
and 14 (darwin22 and darwin23, respectively).

FX

0001-Testsuite-darwin-account-for-macOS-13-and-14.patch
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