docs: add news fragment

jopemachine · claude · jopemachine · commit 296ce722143c · 2026-07-20T13:42:03.000+09:00
Co-Authored-By: Claude Opus 4.8 (1M context) &lt;noreply@anthropic.com&gt;
diff --git a/changes/12912.fix.md b/changes/12912.fix.md
@@ -0,0 +1 @@
+Fix the session result enum downgrade aborting when the column default cannot be cast to the recreated type

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	`1`	`+Fix the session result enum downgrade aborting when the column default cannot be cast to the recreated type`