switch to ubuntu-latest runners #207

Job	Run time
pkr-bld-qemu-x64 / x86_64 (almalinux-8, qemu)	1m 1s
pkr-bld-amazonlinux-x64 / x86_64 (amazonlinux-2)	1m 29s
pkr-bld-qemu-x64 / x86_64 (almalinux-9, qemu)	52s
pkr-bld-amazonlinux-x64 / x86_64 (amazonlinux-2023)	1m 41s
pkr-bld-qemu-x64 / x86_64 (centos-7, qemu)	52s
pkr-bld-qemu-x64 / x86_64 (centos-stream-8, qemu)	1m 3s
pkr-bld-qemu-x64 / x86_64 (centos-stream-9, qemu)	54s
pkr-bld-qemu-x64 / x86_64 (debian-11, qemu)	59s
pkr-bld-qemu-x64 / x86_64 (debian-12, qemu)	1m 3s
pkr-bld-qemu-x64 / x86_64 (fedora-38, qemu)	50s
pkr-bld-qemu-x64 / x86_64 (fedora-39, qemu)	55s
pkr-bld-qemu-x64 / x86_64 (freebsd-13, qemu)	1m 0s
pkr-bld-qemu-x64 / x86_64 (freebsd-14, qemu)	52s
pkr-bld-qemu-x64 / x86_64 (opensuse-leap-15, qemu)	56s
pkr-bld-qemu-x64 / x86_64 (oracle-7, qemu)	50s
pkr-bld-qemu-x64 / x86_64 (oracle-8, qemu)	52s
pkr-bld-qemu-x64 / x86_64 (oracle-9, qemu)	1m 34s
pkr-bld-qemu-x64 / x86_64 (rockylinux-8, qemu)	48s
pkr-bld-qemu-x64 / x86_64 (rockylinux-9, qemu)	51s
pkr-bld-qemu-x64 / x86_64 (ubuntu-20.04, qemu)	54s
pkr-bld-qemu-x64 / x86_64 (ubuntu-22.04, qemu)	47s
pkr-bld-qemu-x64 / x86_64 (ubuntu-23.10, qemu)	50s
	21m 53s

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