Add testinternalcapi to paths to run JIT CI on

Author: Fidget-Spinner

.github/workflows/jit.yml

@@ -7,6 +7,7 @@ on:
       - 'Python/optimizer*.c'
       - 'Python/executor_cases.c.h'
       - 'Python/optimizer_cases.c.h'
+      - '**_testinternalcapi**'
       - '!Python/perf_jit_trampoline.c'
       - '!**/*.md'
       - '!**/*.ini'
@@ -17,6 +18,7 @@ on:
       - 'Python/optimizer*.c'
       - 'Python/executor_cases.c.h'
       - 'Python/optimizer_cases.c.h'
+      - '**_testinternalcapi**'
       - '!Python/perf_jit_trampoline.c'
       - '!**/*.md'
       - '!**/*.ini'