Feat/add hover effects to testimonial cards

[64eyes]

Description

Closes #1143

Changes proposed

What were you told to do?

Add hover effects to testimonial cards on the landing page.

What did you do?

Added hover effects to testimonial cards on the landing page.

Check List (Check all the applicable boxes)

🚨Please review the contribution guideline for this repository.

• My code follows the code style of this project.
• This PR does not contain plagiarized content.
• The title and description of the PR is clear and explains the approach.
• I am making a pull request against the dev branch (left side).
• My commit messages styles matches our requested structure.
• My code additions will fail neither code linting checks nor unit test.
• I am only making changes to files I was requested to.

Screenshots/Videos