[LLVM] Update exception handling maintainer (#120585)

Nominate rnk as the new maintainer for exception handling.

Author: nikic

llvm/Maintainers.md

@@ -436,8 +436,8 @@ echristo@gmail.com (email), [echristo](https://github.com/echristo) (GitHub)
 
 #### Exception handling
 
-Anton Korobeynikov \
-anton@korobeynikov.info (email), [asl](https://github.com/asl) (GitHub)
+Reid Kleckner \
+rnk@google.com (email), [rnk](https://github.com/rnk) (GitHub)
 
 #### LLVM Buildbot
 
@@ -493,7 +493,7 @@ Hal Finkel (hfinkel@anl.gov, [hfinkel](https://github.com/hfinkel) -- AliasAnaly
 Renato Golin (rengolin@systemcall.eu, [rengolin](https://github.com/rengolin)) -- ARM backend \
 Venkatraman Govindaraju (venkatra@cs.wisc.edu, [vegovin](https://github.com/vegovin) -- Sparc backend \
 James Grosbach (grosbach@apple.com) -- MC layer \
-Anton Korobeynikov (anton@korobeynikov.info, [asl](https://github.com/asl)) -- ARM EABI, Windows codegen \
+Anton Korobeynikov (anton@korobeynikov.info, [asl](https://github.com/asl)) -- ARM EABI, Windows codegen, Exception handling \
 Benjamin Kramer (benny.kra@gmail.com, [d0k](https://github.com/d0k)) -- DWARF Parser \
 David Majnemer (david.majnemer@gmail.com, [majnemer](https://github.com/majnemer)) -- InstCombine, ConstantFold \
 Tim Northover (t.p.northover@gmail.com, [TNorthover](https://github.com/TNorthover)) -- AArch64 backend \