community build: add Sonatype s01 snapshot resolver to jackson-module-scala

It turns out that `jackson-module-scala` uses snapshot versions of the
Jackson artifacts (currently 3.0.0-SNAPSHOT). Their roadmap for 3.0.0
includes changing their maven coordinates. This process has begun, and
included a change to now publish snapshots on s01.oss.sonatype.org,
which is not searched by sbt by default.

Author: griggt