boulder+moss: Update to v0.26.1

With this release, we have made it possible to do our first on-disk,
format-upgrade.

The release also contains a host of other changes that have been made to
the components since the 0.25.6 release.

Signed-off-by: Rune Morling <ermo@aerynos.com>

README: Update with runtime prerequisites

Was missing cpio and bsdtar-static needed by latest boulder.

Signed-off-by: Rune Morling <ermo@serpentos.com>

boulder: Use build.aerynos.dev/volatile repository

The idea is to distinguish between the live "new .stones land here" build
repo, and the actual package repo where packages have had a modicum of
testing and where they are sync'd to atomically.

Signed-off-by: Rune Morling <ermo@serpentos.com>

Add --output-dir option to moss index

justfile: Make `just get-started` POSIX sh compliant

This makes it also work with dash as /bin/sh on debian for instance.

Signed-off-by: Rune Morling <ermo@serpentos.com>

justfile: Make `just get-started` POSIX sh compliant

This makes it also work with dash as /bin/sh on debian for instance.

Signed-off-by: Rune Morling <ermo@serpentos.com>

Release v0.25.1

Release v0.24.7

Release v0.24.6