Fix Go 1.25.5 compile script to suppress chmod error on build failure

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: koki-develop

packages/go/1.25.5/compile

@@ -2,5 +2,5 @@
 
 mv $1 $1.go
 export GOCACHEPROG="/piston/packages/go/1.25.5/cacheprog /piston/packages/go/1.25.5/cache"
-CGO_ENABLED=0 go build -o binary *.go
+CGO_ENABLED=0 go build -o binary *.go && \
 chmod +x binary