Run lambda script on cached deps found

[AlexanderC]

[avozicov]

Unable to validate the issue manually. Unit test is required.
Reference: #376

[AlexanderC]

Steps to test:

• Run deepify compile prod on one lambda
• See the code is transpiled from .es6 to .js
• Remove .js files and dependencies from that lambda
• Rerun deepify compile prod on that lambda again (should be cached)
• Check if the .es6 files are compiled to .js again

if .js files are in place- PASSED