Replace John Hanks on the TSC with Timothy Middelkoop

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

MAINTAINING.md

@@ -6,8 +6,8 @@
 
 - [Anderson, Jonathon](janderson@ciq.com) (CIQ)
 - [Goll, Christian](cgoll@suse.de) (SUSE)
-- [Hanks, John](griznog@gmail.com) (Chan Zuckerburg Biohub)
 - [Kurtzer, Greg](gmk@ciq.com) (CIQ)
+- [Middelkoop, Timothy](tmiddelkoop@internet2.edu) (Internet2)
 - [Siadal, Jeremy](jeremy.c.siadal@intel.com) (Intel)
 
 TSC chair: Jonathon Anderson (November 2023)
@@ -22,6 +22,10 @@ may be admitted by consensus vote by the existing TSC members.
 
 The TSC chair is selected by the TSC once per year in November.
 
+TSC members should advise the TSC when they are no longer able to
+continue in their role. The member is then removed from the committee
+by vote of the remaining TSC members.
+
 ## Roadmapping
 
 - The project roadmap is formally defined by GitHub milestones