release-notes: Add release notes for 0.14.1

This commit adds the release notes for the Zephyr SDK 0.14.1 release.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

release-notes.md

@@ -1,6 +1,6 @@
 # Notes / Changes in various releases
 
-## Zephyr SDK 0.14.1-rc2
+## Zephyr SDK 0.14.1
 
 - general:
   * Introduced minimal distribution bundle that supports selective download