Revert "Temporarily disable Windows tests (#3862)" (#3884)

This reverts commit d763b2c7293cf60ad9688b09453a7fd08edb1e3e.
diff --git a/.ci/dev/try_builders.json b/.ci/dev/try_builders.json
index 8002188..6334a3d 100644
--- a/.ci/dev/try_builders.json
+++ b/.ci/dev/try_builders.json
@@ -3,7 +3,7 @@
       {
          "name":"Windows Plugins",
          "repo":"plugins",
-         "enabled":false
+         "enabled":true
       }
    ]
 }