chore: Bump pgn grammar

jcs090218 · github-actions[bot] · commit 1a66d5632441 · 2025-11-23T02:23:05.000Z
diff --git a/repos/pgn b/repos/pgn
@@ -1 +1 @@
-Subproject commit 5fddef82dfd36fe05894f290ae9c323a9e656fc6
+Subproject commit b786d0c18a7ca0b371b3672d8084155a95d0e206
