fix: added translation for testimonial data of Homepage

[PR4NJ41]

Description

• The testimonial data of Homepage was not getting translated earlier.
• I have added the translation text to respective landing-page.json files for both the languages.
• Instead of directly using the text I have fetched the text from .json files for the testimonial section.

Related issue(s)
Resolves Issue #2039

Before

After

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[asyncapi-bot]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🔴 Performance	30
🟢 Accessibility	98
🟢 Best practices	92
🟢 SEO	100
🔴 PWA	33

Lighthouse ran on https://deploy-preview-2724--asyncapi-website.netlify.app/

[anshgoyalevil]

Keeping testimonials in the English language was intentional as people give feedback about a product in their native language and expressions. If we translate that thing, it would feel like the testimonials are just another marketing piece that is dubbed into each language irrespective of the original text.

wdyt @derberg, @akshatnema ?

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[sambhavgupta0705]

closing this