chore(snabbkaffe): Update version to 0.12.0

rebar.config

@@ -54,7 +54,7 @@
     , {recon, {git, "https://github.com/ferd/recon", {tag, "2.5.1"}}}
     , {observer_cli, "1.6.1"} % NOTE: depends on recon 2.5.1
     , {getopt, "1.0.1"}
-    , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "0.10.0"}}}
+    , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "0.12.0"}}}
     ]}.
 
 {xref_ignores,