[FIX] upgrade: half-versions are missing in mapping

Commit 4d671eb didn't add intermediary versions
12.5 and 14.5 in the mapping.

As a result, `data.version` was transformed to `undefined` and
the data would go through every upgrade steps from the very
begining, which could obviously lead to crashes and corrupted
data.

closes #7367

Task: 5116401
Signed-off-by: Adrien Minne (adrm) <[email protected]>

Author: LucasLefevre

src/migrations/data.ts

@@ -80,8 +80,10 @@ const LEGACY_VERSION_MAPPING = {
   17: "17.4",
   16: "17.3",
   15: "17.2",
+  "14.5": "16.4.1",
   14: "16.4",
   13: "16.3",
+  "12.5": "15.4.1",
   12: "15.4",
 
   // not accurate starting at this point