Update Urbit to v4.2

[yapishu]

• Updated Urbit to official v4.2 binary: https://github.com/urbit/vere/releases

[github-actions]

🎉   Linting finished with no errors or warnings   🎉

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Linting Results

Severity	File	Description
ℹ️	urbit/docker-compose.yml	Mounted file/directory "/urbit/piers" doesn't exist: The volume "${APP_DATA_DIR}/piers:/data/piers" tries to mount the file/directory "/urbit/piers", but it is not present. This can lead to permission errors!
ℹ️	urbit/docker-compose.yml	Mounted file/directory "/urbit/keys" doesn't exist: The volume "${APP_DATA_DIR}/keys:/data/keys" tries to mount the file/directory "/urbit/keys", but it is not present. This can lead to permission errors!
ℹ️	urbit/docker-compose.yml	External port mapping "34343:34343": Port mappings may be unnecessary for the app to function correctly. Docker's internal DNS resolves container names to IP addresses within the same network. External access to the web interface is handled by the app_proxy container. Port mappings are only needed if external access is required to a port not proxied by the app_proxy, or if an app needs to expose multiple ports for its functionality (e.g., DHCP, DNS, P2P, etc.).
ℹ️	urbit/docker-compose.yml	Potentially using unsafe user in service "manager": The default container user "root" can lead to security vulnerabilities. If you are using the root user, please try to specify a different user (e.g. "1000:1000") in the compose file or try to set the UID/PUID and GID/PGID environment variables to 1000.

Legend

Symbol	Description
❌	Error: This must be resolved before this PR can be merged.
⚠️	Warning: This is highly encouraged to be resolved, but is not strictly mandatory.
ℹ️	Info: This is just for your information.

[al-lac]

Hey @yapishu, thanks for the urbit update! 🔝

I just tested it and I cannot seem to boot ships after updating from 4.0 to 4.2:

~
urbit 4.2
boot: home is /data/piers/comet-48168
loom: mapped 2048MB
lite: arvo formula 4ce68411
lite: core 641296f
lite: final state 641296f
disk: loaded epoch 0i1515
loom: mapped 2048MB
boot: protected loom
live: mapped: MB/762.511.360
boot: installed 1770 jets
stale snapshot, downgrade runtime to replay
pier: serf unexpectedly shut down

When booting fresh ships on Urbit 4.2, the access key does not seem to work, I am stuck on the login screen.

Can you take a look at this?