[SPIRV] Update spirv-tools to v2026.2.rc2 (#8415)

s-perron · web-flow · commit fe2615732899 · 2026-04-30T18:06:52.000Z
Update spirv-tools to the latest release candidate.
diff --git a/external/SPIRV-Tools b/external/SPIRV-Tools
@@ -1 +1 @@
-Subproject commit c1cb30bb04e2bf911755a40df1242cc6e3d83e26
+Subproject commit 0539c81f69a3daeb706fd3477dca61435b475156
