chore(make): add go mod tidy in samples target

Makefile

@@ -42,7 +42,7 @@ samples:
 	find ./samples -type f -name main.go -exec dirname {} \; | while read DIRECTORY; do \
 		echo "# $$DIRECTORY"; \
 		docker run -t --rm -u $$(id -u):$$(id -g) -v $$(pwd):/data/ -w /data/ -e GOCACHE=/data/.cache/go-build $(GOLANG_DOCKER_IMAGE) \
-				sh -c "cd '$$DIRECTORY' && go build -o bin/" || touch samples.err; \
+				sh -c "cd '$$DIRECTORY' && go mod tidy && go build -o bin/" || touch samples.err; \
 	done
 	[ ! -f samples.err ]