Move ccall tests to node 1 on 32 bit

[gbaraldi]

The ccall tests seems to be a very common failure point so move it to node 1 because it usually has less maxrss

[staticfloat]

I'd rather move it unconditionally.

[gbaraldi]

That's fine with me

[vtjnash]

Still fails:

Executing tests that run on node 1 only:
--
  | ccall                                             (1) \|        started at 2023-07-05T11:50:01.200
  | fatal: error thrown and no exception handler available.
  | ErrorException("fatal error allocating signal stack: mmap: Cannot allocate memory")
  | ijl_errorf at /cache/build/default-amdci5-2/julialang/julia-master/src/rtutils.c:77
  | alloc_sigstack at /cache/build/default-amdci5-2/julialang/julia-master/src/signals-unix.c:625 [inlined]
  | jl_install_thread_signal_handler at /cache/build/default-amdci5-2/julialang/julia-master/src/signals-unix.c:632
  | jl_init_root_task at /cache/build/default-amdci5-2/julialang/julia-master/src/task.c:1723
  | ijl_adopt_thread at /cache/build/default-amdci5-2/julialang/julia-master/src/threading.c:427
  | unknown function (ip: 0xe62c547b)
  | jl_work_wrapper at /cache/build/default-amdci5-2/julialang/julia-master/src/jl_uv.c:1045
  | uv__queue_work at /workspace/srcdir/libuv/src/threadpool.c:305
  | worker at /workspace/srcdir/libuv/src/threadpool.c:122
  | start_thread at /lib/i386-linux-gnu/libpthread.so.0 (unknown line)
  | clone at /lib/i386-linux-gnu/libc.so.6 (unknown line)
 ```

[vtjnash]

Note that, since 48bc266, only 500 Tasks are permitted before this will crash. We may want a way to bypass that limit for certain use cases (such as this one).

[gbaraldi]

I wonder which test in ccall is stressing this so much, maybe we should skip/reduce the size of it on 32 bit.