coreutils: Add PKG_FIXUP:=autoreconf and bump PKG_RELEASE

coreutils: Add PKG_FIXUP:=autoreconf and bump PKG_RELEASE

This fixes the build on GCC 14 and solves issue https://github.com/openwrt/packages/issues/26175

Maintainer: @hnyman
Compile tested: x86/64, QEMU Standard PC (Q35 + ICH9, 2009), r29064-696ad7b1aa09
Compile tested: ath79/generic, TP-Link Archer C7 v4, r29064-696ad7b1aa09
Compile tested: realtek/rtl838x, Netgear GS108T v3, r29064-696ad7b1aa09
Run tested: x86/64, QEMU Standard PC (Q35 + ICH9, 2009), r29064-696ad7b1aa09, booted and used for 7h without issues
Run tested: ath79/generic, TP-Link Archer C7 v4, r29064-696ad7b1aa09, booted and used for 7h without issues
Run tested: realtek/rtl838x, Netgear GS108T v3, r29064-696ad7b1aa09, booted and used for 7h without issues

Signed-off-by: Pascal Ernster <[email protected]>