external/libstb-secvar: bump commit level to post-merge main #5

Job	Run time
static / formatcheck	15s
static / cppcheck	15s
tests / cmake	1m 10s
tests / makefile	45s
tests / cmake (-DGUEST_BACKEND=0)	55s
tests / makefile (GUEST_BACKEND=0)	39s
tests / cmake (-DHOST_BACKEND=0)	23s
tests / makefile (HOST_BACKEND=0)	23s
staticbuild (x86_64)	24s
rpmbuild (x86_64, almalinux:8)	30s
staticbuild (ppc64le)	1m 26s
rpmbuild (x86_64, almalinux:9)	28s
rpmbuild (x86_64, fedora:37)	1m 12s
rpmbuild (x86_64, fedora:38)	1m 9s
rpmbuild (x86_64, fedora:rawhide)	55s
rpmbuild (x86_64, opensuse/leap:15)	1m 14s
rpmbuild (x86_64, opensuse/tumbleweed:latest)	37s
rpmbuild (ppc64le, almalinux:8)	2m 53s
rpmbuild (ppc64le, almalinux:9)	3m 35s
rpmbuild (ppc64le, fedora:37)	7m 35s
rpmbuild (ppc64le, fedora:38)	7m 3s
rpmbuild (ppc64le, fedora:rawhide)	6m 5s
rpmbuild (ppc64le, opensuse/leap:15)	5m 21s
rpmbuild (ppc64le, opensuse/tumbleweed:latest)	3m 14s
release	5s
	48m 31s

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