Updated version to 0.1.2

Since it should refere to the integration version
and not the minimum HA version.
Bumped up a new patch release as well. To ensure
That version numbering is in sync with the releases

Author: jellespijker

custom_components/ultimaker/manifest.json

@@ -6,5 +6,5 @@
   "dependencies": [],
   "codeowners": ["@jellespijker"],
   "requirements": [],
-  "version": "2021.1.0"
+  "version": "0.1.2"
 }