Merge branch 'jrm/docker' into 'master'

chore(ci): bump ci files to use new and lighter docker image

See merge request TankerHQ/sdk-rust!17

Author: Jeremy T

.gitlab-ci.yml

@@ -1,7 +1,7 @@
 include:
   project: TankerHQ/gitlab-ci-files
   file: /rust.yml
-  ref: 98ea16a090e6414744cd107c170505b715e92545
+  ref: 4b9ae23b9ee4d88488d645d4af71188c28c634e3
 
 check/native-from-sources/linux:
   extends: