fix problem acquiring sqlite flock when running slips as root

[AlyaGomaa]

in this PR #2063

Traceback (most recent call last):
File "/home/alya/Desktop/StratosphereLinuxIPS/./slips.py", line 64, in
slips.start()
File "/home/alya/Desktop/StratosphereLinuxIPS/slips/main.py", line 556, in start
self.db = DBManager(
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/core/database/database_manager.py", line 110, in init
self.sqlite = SQLiteDB(self.logger, output_dir, main_pid)
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/core/database/sqlite_db/database.py", line 48, in init
super().init(self.name.lower(), main_pid, self._flows_db)
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/common/abstracts/isqlite.py", line 48, in init
self.connect(db_file)
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/common/abstracts/isqlite.py", line 53, in connect
with self._acquire_flock():
File "/usr/lib/python3.10/contextlib.py", line 135, in enter
return next(self.gen)
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/common/abstracts/isqlite.py", line 92, in _acquire_flock
with self.sqlite_flock.acquire():
File "/usr/lib/python3.10/contextlib.py", line 135, in enter
return next(self.gen)
File "/home/alya/Desktop/StratosphereLinuxIPS/slips_files/common/sqlite_flock.py", line 106, in acquire
self.lockfile_fd = open(self.lockfile_path, "w")
PermissionError: [Errno 13] Permission denied: '/tmp/slips/root_154695_sqlite_db.lock'