chore(deps): update mix dependencies

renovate.json

@@ -17,14 +17,9 @@
       "matchDatasources": ["docker"]
     },
     {
-      "description": "Disable elixir updates, as renovate does not work with their <version>-otp-<version> numbering scheme.",
+      "matchFileNames": [".tool-versions", "Dockerfile"],
       "matchCurrentValue": "**-otp-**",
       "enabled": false
-    },
-    {
-      "description": "Disable erlang updates as they need to be coordinated with elixir updates.",
-      "matchDepNames": "erlang",
-      "enabled": false
     }
   ]
 }