Adding test for legacy checkpoint created with 2.6.0 (Lightning-AI#21388)

pl-ghost · justusschock · Iruos8805 · commit 50cbb3c519e6 · 2025-12-04T14:14:38.000+05:30
[create-pull-request] automated change

Co-authored-by: justusschock &lt;justusschock@users.noreply.github.com&gt;
diff --git a/tests/legacy/back-compatible-versions.txt b/tests/legacy/back-compatible-versions.txt
@@ -110,3 +110,4 @@
 2.5.4
 2.5.5
 2.5.6
+2.6.0

-Original file line number
+Diff line change
 .5.4
 .5.5
 .5.6
 +2.6.0