Update with recently added maintainers. (#460)

Signed-off-by: Artur Souza <[email protected]>

Author: artursouza

MAINTAINERS.md

@@ -7,15 +7,19 @@ This is the list of maintainers for all Dapr repositories, in alphabetical order
 - Annu Singh (Nirmata) [@annucode](https://github.com/annucode) (non voting)
 - Artur Souza (Diagrid) [@artursouza](https://github.com/artursouza)
 - Bernd Verst (Microsoft) [@berndverst](https://github.com/berndverst)
-- Cecil Phillip (Stripe) [cecilphillip](https://github.com/cecilphillip) (non voting)
+- Cecil Phillip (Stripe) [@cecilphillip](https://github.com/cecilphillip) (non voting)
+- Deepanshu Agarwal (Microsoft) [@DeepanshuA](https://github.com/DeepanshuA)
 - Hannah Hunter (Microsoft) [@hhunter-ms](https://github.com/hhunter-ms)
 - Hal Spang (Microsoft) [@halspang](https://github.com/halspang)
+- Josh van Leeuwen (Diagrid) [@JoshVanL](https://github.com/JoshVanL)
 - Long Dai (Intel) [@daixiang0](https://github.com/daixiang0)
 - Marc Duiker (Diagrid) [@marcduiker](https://github.com/marcduiker) (non voting)
 - Mark Fussell (Diagrid) [@msfussell](https://github.com/msfussell)
+- Mike Nguyen (Independent) [@mikeee](https://github.com/mikeee)
 - Mukundan Sundararajan (Microsoft) [@mukundansundar](https://github.com/mukundansundar)
 - Nick Greenfield (Microsoft) [@greenie-msft](https://github.com/greenie-msft)
 - Paul Yuknewicz (Microsoft) [@paulyuk](https://github.com/paulyuk)
+- Phillip Hoff (Microsoft) [@philliphoff](https://github.com/philliphoff)
 - Rob Landers (Automattic) [@withinboredom](https://github.com/withinboredom)
 - Ryan Nowak (Microsoft) [@rynowak](https://github.com/rynowak)
 - Shubham Sharma (Microsoft) [@shubham1172](https://github.com/shubham1172)