Add sanjayaksaxena to maintainers.yml

[prtksxna]

Please confirm this pull request meets the following requirements:

• [x] I followed the contributing guidelines: https://github.com/github/india/blob/main/CONTRIBUTING.md.

Which change are you proposing?

• [ ] Adding/updating open source project/s
• [x] Adding/updating maintainer/s

---

Adding/updating maintainer/s

• [x] Maintainer's location on their GitHub profile indicates as India
• [x] Maintainer has approved this PR to be included on the website

What open source project/s does the individual maintain?

• https://github.com/winkjs/wink-nlp
• https://github.com/winkjs/wink-helpers
• https://github.com/winkjs/wink-statistics

---

Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.

[sanjayaksaxena]

👍🏾