Update build and deps

* Dependencies
** scala-collection-compat: 2.1.2
* Build
** scala: 2.12.9
** sbt-assembly: 0.14.10
** sbt-sonatype: 2.5

Signed-off-by: 35V LG84 <35vlg84-x4e6b92@e257.fi>
3 jobs for master in 12 minutes and 31 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Test
passed #269722218
codecov

00:09:16

99.8%
passed #269722209
test·jdk11

00:12:27

passed #269722217
test·jdk8

00:11:18