MAINTAINERS: update maintainers (operator-framework#1147)

**Description of the change:** Update MAINTAINERS


**Motivation for the change:** Keep file up-to-date

MAINTAINERS

@@ -5,10 +5,14 @@
 #     Individual's name <submission email address> <email2> <emailN> (@GITHUB_HANDLE)
 
 Haseeb Tariq <[email protected]> (@hasbro17)
-Sebastien Pahl <[email protected]> (@spahl)
 Alexander Pavel <[email protected]> (@AlexNPavel)
 Eric Stroczynski <[email protected]> (@estroz)
 Shawn Hurley <[email protected]> (@shawn-hurley)
 Lili Cosic <[email protected]> (@LiliC)
 Joe Lanford <[email protected]> (@joelanford)
 Ish Shah <[email protected]> (@theishshah)
+Fabian von Feilitzsch <[email protected]> (@fabianvf)
+Dylan Murray <[email protected]> (@dymurray)
+Jesus Rodriguez <[email protected]> (@jmrodri)
+John Kim <[email protected]> (@johnkim76)
+Alay Patel <[email protected]> (@alaypatel07)