test: Make valgrind.supp work on aarch64

The equivalent suppression on aarch64 looks like:

{
   <insert_a_suppression_name_here>
   Memcheck:Param
   pwrite64(buf)
   fun:__libc_pwrite64
   fun:pwrite
   fun:__os_io
   obj:/usr/lib/aarch64-linux-gnu/libdb_cxx-5.3.so
   fun:__log_flush_int
   fun:__log_flush
   fun:__memp_sync_int
   fun:__db_sync
   fun:__db_refresh
   fun:__db_close
   fun:__fop_subdb_setup
   fun:__db_open
   fun:__db_open_pp
}

0 files changed, 0 insertions, 0 deletions