Add new members to the tooling subcommittee (#347)

Author: alexandruradovici

subcommittee/tooling/members.md

@@ -23,4 +23,8 @@
 - Felix Gilcher (Ferrous Systems)
 - Espen Albrektsen (Sonair AS)
 - Pete LeVasseur (Woven by Toyota)
+- Paul Sastrasinh
+- Stephen Hedrick (AdaCore)
+- Joe Johnson
+- Antoshkin Mikhail
 - Alexandru Radovici (Moderator)