Configure boomper probot (testcontainers#1409)

rnorth · web-flow · commit 2c3b36ad43f2 · 2019-04-16T07:34:17.000+01:00
Configure [boomper](https://github.com/toolmantim/boomper) probot to keep latest version number in docs in sync with releases
diff --git a/.github/boomper.yml b/.github/boomper.yml
@@ -0,0 +1,3 @@
+updates:
+- path: mkdocs.yml
+  pattern: 'latest_version: (.*)'
