test: use more recent releases for upgrade testing — radicle-ci-broker

Each additional version makes the upgrade test take longer, and we only really need to care about recent releases, I think.

Signed-off-by: Lars Wirzenius liw@liw.fi

 when I run chmod +x adapter.sh
 when I touch file run-list.txt
 when I run bash radenv.sh bash -x verify-upgrade run-list.txt 04ac3852a52a0256a126252b2c46dea225189441
 when I run bash radenv.sh bash -x verify-upgrade run-list.txt 5ae4d012f2b2f3df6fbbfce9b7d739f13363d0ec
 when I run bash radenv.sh bash -x verify-upgrade run-list.txt 535b1592904125fbe62c3c8c383d7741d9f432ac
 when I run bash radenv.sh bash -x verify-upgrade run-list.txt 869b451728d16719b560df142b2d901cbaf3764c
 when I run bash radenv.sh bash -x verify-upgrade run-list.txt HEAD
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