Update sandbox chromatic script

scripts/tasks/chromatic.ts

@@ -15,6 +15,8 @@ export const chromatic: Task = {
     await exec(
       `npx chromatic \
           --exit-zero-on-changes \
+          --exit-once-uploaded \
+          --only-changed \
           --storybook-build-dir=${builtSandboxDir} \
           --junit-report=${junitFilename} \
           --projectToken=${token}`,