New English grammar rules – Merriam-Webster declares pronoun “they” is OK!
This is a big change for the use of he/she = they.
The decision was based on 313 percent increase in look-ups on the company’s search site this year compared to 2018. Gender neutral.

https://www.theladders.com/career-advice/7-overused-phrases-to-eliminate-from-your-work-emails