Try uploaded: in tag

I think this is taking effect now (e.g.
https://ci.chromium.org/p/crashpad/builders/try/crashpad_try_win_dbg/1539
), but should included the "uploaded:" prefix to get the right tag (at
least that's my next guess).

TBR: justincohen@chromium.org
Change-Id: I65942962eb87f778c199f03528145303af930e22
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2859470
Reviewed-by: Scott Graham <scottmg@chromium.org>
diff --git a/cr-buildbucket.cfg b/cr-buildbucket.cfg
index 2db0855..a3cdb39 100644
--- a/cr-buildbucket.cfg
+++ b/cr-buildbucket.cfg
@@ -78,7 +78,7 @@
   dimensions: "os:Windows-10"
   recipe {
     properties: "target_os:win"
-    properties_j: "$depot_tools/windows_sdk:{\"version\":\"2021-04-28\"}"
+    properties_j: "$depot_tools/windows_sdk:{\"version\":\"uploaded:2021-04-28\"}"
   }
 }