Omit Python/perf_jit_trampoline.c from the **/*jit* CODEOWNERS rule (python#136519)

Omit perf_jit_trampoline from "JIT" codeowners

Author: brandtbucher

.github/CODEOWNERS

@@ -27,6 +27,7 @@ Modules/Setup*                @erlend-aasland
 **/*genobject*                @markshannon
 **/*hamt*                     @1st1
 **/*jit*                      @brandtbucher @savannahostrowski @diegorusso
+Python/perf_jit_trampoline.c  # Exclude the owners of "**/*jit*", above.
 Objects/set*                  @rhettinger
 Objects/dict*                 @methane @markshannon
 Objects/typevarobject.c       @JelleZijlstra