julia_gc: enable guard page hack for Julia >= 1.12, too (#5913) #6168

Job	Run time
Cross compiler for s390x	32m 21s
Test in OpenBSD	8m 55s
testinstall - - ubuntu-latest	5m 19s
teststandard - - ubuntu-latest	20m 17s
testmanuals - - ubuntu-latest	6m 0s
testexpect testmockpkg testspecial test-compile testlibgap testkernel testworkspace - - ubuntu-latest	7m 36s
testpackages testinstall-loadall - - ubuntu-latest	26m 32s
makemanuals testmakeinstall - CONFIGFLAGS="--prefix=/tmp/gapprefix" NO_COVERAGE=1 - ubuntu-latest	6m 33s
teststandard - ABI=32 CONFIGFLAGS="" - ubuntu-20.04	18m 47s
testinstall - HPCGAP=yes ABI=64 - ubuntu-latest	8m 9s
testmockpkg testinstall testworkspace - BOOTSTRAP_MINIMAL=yes - macos-latest	7m 7s
testbugfix - CONFIGFLAGS="--enable-memory-checking" - ubuntu-latest	27m 58s
testbuildsys testmockpkg testinstall - NO_COVERAGE=1 ABI=64 BUILDDIR=out-of-tree CONFIGFLAGS="--enable-valgrind" - ubuntu-latest	4m 41s
testbuildsys testmockpkg testinstall - NO_COVERAGE=1 ABI=32 BUILDDIR=out-of-tree CONFIGFLAGS="" - ubuntu-20.04	4m 28s
testinstall - JULIA=yes CONFIGFLAGS="--enable-debug" - ubuntu-20.04	5m 13s
testmockpkg testinstall - - windows-2019	18m 41s
Send Slack notification on status change	3s
	3h 28m 40s

Provide feedback