libmakepkg/autodep: fix versioned library detection
This is the same logic as it is implemented in devtools: https://gitlab.archlinux.org/archlinux/devtools/-/blob/master/src/find-libdeps.in#L48
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This is the same logic as it is implemented in devtools: https://gitlab.archlinux.org/archlinux/devtools/-/blob/master/src/find-libdeps.in#L48