overlay-debs/mesa-snapshot: pull in FP16 fixes

Update commit ID to a recent one, which, among other changes, pulls in
FP16 fixes in the freedreno driver.

Signed-off-by: Dmitry Baryshkov <[email protected]>

Author: lumag

overlay-debs/mesa-snapshot/mesa-snapshot.yaml

@@ -4,4 +4,4 @@ debdiff_file: "mesa_25.2.0.debdiff"
 script: mesa-snapshot.sh
 suite: trixie
 env:
-  COMMIT: 8d13fc447e346477bab7e1b587c55fe0451ee654
+  COMMIT: de1ce0f75e98f6fcdc8b7a7b495f54a2060a5896