fix: ensure update_bindings runs as amd64

Refs: #446, #448

Author: Qard

tools/update_bindings.sh

@@ -6,6 +6,7 @@
 set -e
 
 docker buildx build \
+  --platform linux/amd64 \
   --target docsrs_bindings \
   -o type=local,dest=. \
   --build-arg PHP_VERSION=8.3 \