v3.30.1

Changed

• +goose ENVSUB ON: support more shell expansions, such as ${VAR:?message}, ${VAR:+word},
  and ${#VAR}. A $ that does not start a variable name, such as $1, is now kept as-is
  instead of an error (#1174)

Fixed

• Build failure when github.com/mfridman/interpolate is upgraded to v0.2.0, for example with
  go get -u (#1176)
• Lock: fix an edge case where a long-lived locker could stop waiting for a held lock and fail
  immediately. Programs that migrate once at startup were not affected (#1173)