ci: update ownership to include MarkTechson (angular#57885)

Update pullapprove to include MarkTechson in ownership of a couple areas. PR Close angular#57885

Author: josephperrott

.pullapprove.yml

@@ -613,6 +613,7 @@ groups:
  - devversion
  - atscott
  - pkozlowski-opensource
+ - MarkTechson
  - ~JeanMeche
 
  # =========================================================
@@ -632,7 +633,7 @@ groups:
  - dgp1130
  - josephperrott
  - mgechev
- - twerske
+ - MarkTechson
  - ~JeanMeche
 
  # =========================================================