Placed google repository as first priority.

[moksh-mahajan]

Description

Updated build.gradle file to make google repository as first priority.

Fixes #1336

Type of Change:

• Code
• Quality Assurance

Code/Quality Assurance Only

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update (software upgrade on readme file)
• New feature (non-breaking change which adds functionality pre-approved by mentors)

How Has This Been Tested?

Application was built successfully in android studio without any errors

Checklist:

• [x] My PR follows the style guidelines of this project
• [x] I have performed a self-review of my own code or materials

Code/Quality Assurance Only

• [x] My changes generate no new warnings

[moksh-mahajan]

@Rimjhim28 Please review.

[moksh-mahajan]

@Rimjhim28 Done. Please review.