Bump version for compiler release.

RELNOTES: n/a

PiperOrigin-RevId: 803035765

Author: Closure Team

.github/piper-cut-cl.json

@@ -1,4 +1,4 @@
 {
-  "piper_cut_cl": "801937030",
-  "version_id": "v20250901"
+  "piper_cut_cl": "802737828",
+  "version_id": "v20250903"
 }