Update README dependencies section for v1.3.0

[take-cheeze]

Description

The dependencies section of README doesn't reflect the update of 1.3.0
Ref: https://github.com/pytorch/TensorRT/releases/tag/v1.3.0

Type of change

• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[narendasan]

LGTM