[roll] Roll fuchsia [assembly] Use slot as compression storage strategy

slot is superior to tri_page, which is going to be deprecated.

Original-Bug: 409561818
Run-All-Tests: True
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1273827
Original-Revision: 9b2ce026e343ba4bec6b95276e2c4af92d8cd56b
GitOrigin-RevId: ef9e21cf3ccfe3468f1d3604f2c1adbbfbbed3dd
Change-Id: I417df86b4fb117146cf94c191f9f1900314552ff

Author: Adrian Danis

stem

@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="6cd15ad62ae63c10a846a8a264b2c701bd9105e4"
+             revision="9b2ce026e343ba4bec6b95276e2c4af92d8cd56b"
              />
   </imports>
   <projects>