Dependency version shifted to project level gradle file

[geekanamika]

Description

Dependency version shifted to Project level gradle file so that app version will be at once place and easy to maintain.

Fixes #375

Type of Change:

• Quality Assurance

How Has This Been Tested?

Gradle sync successfully

• My PR follows the style guidelines of this project
• I have performed a self-review of my own code or materials
• I have commented my code or provided relevant documentation, particularly in hard-to-understand areas

Code/Quality Assurance Only

• My changes generate no new warnings