Increase test timeout
Increase test timeout

...it now matches the duration of another nearby timeout in the code, and it
happened to cause a parallel "make check" to sometimes fail on a slow MacBook.

Change-Id: If8bddb82a05c46637fdc2fcc3373411fcb37a466

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core