Replace time.time_ns() call with time.time() to make compatible with older python3

src/miniq.py

@@ -31,7 +31,7 @@ if not os.path.exists(os.path.join(JOB_DEFS, data['job'] + '.job')):
     sys.exit(1)
 
 # This is the name of the file that will be written to the queued jobs
-file_name = str(time.time_ns()) + '.' + str(job_name) + '.json'
+file_name = str(int(time.time() * 100000)) + '.' + str(job_name) + '.json'
 
 # Write the job data to the queue file
 with open(os.path.join(QUEUED_JOBS, file_name), 'w') as out_file: