[pyreverse] Setting the project name with a "/" at the end crashes pyreverse

[qequ]

Bug description

Calling pyreverse via command line naming the project with a "/" like myproject/ crashes the program

Configuration

No response

Command used

pyreverse -o png -p packagename/ path_to_project/

Pylint output

Format png is not supported natively. Pyreverse will try to generate it using Graphviz...
parsing ...

Traceback (most recent call last):
  File "/home/alvaro/env_tt/bin/pyreverse", line 8, in <module>
    sys.exit(run_pyreverse())
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/__init__.py", line 74, in run_pyreverse
    PyreverseRun(argv or sys.argv[1:])
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/pyreverse/main.py", line 280, in __init__
    sys.exit(self.run(args))
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/pyreverse/main.py", line 299, in run
    writer.DiagramWriter(self.config).write(diadefs)
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/pyreverse/writer.py", line 53, in write
    self.save()
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/pyreverse/writer.py", line 154, in save
    self.printer.generate(self.file_name)
  File "/home/alvaro/env_tt/lib/python3.10/site-packages/pylint/pyreverse/dot_printer.py", line 159, in generate
    pdot, dot_sourcepath = tempfile.mkstemp(".gv", name)
  File "/usr/lib/python3.10/tempfile.py", line 480, in mkstemp
    return _mkstemp_inner(dir, prefix, suffix, flags, output_type)
  File "/usr/lib/python3.10/tempfile.py", line 395, in _mkstemp_inner
    fd = _os.open(file, flags, 0o600)
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/packages_packagename/_uqrljp5.gv'

Expected behavior

Generate images correctly

Pylint version

pylint 2.17.1
astroid 2.15.1
Python 3.10.10 (main, Feb  8 2023, 14:50:01) [GCC 9.4.0]

OS / Environment

ubuntu 22.04

Additional dependencies

No response

[qequ]

@Pierre-Sassoulas please assign this to me

[Pierre-Sassoulas]

Done, thank you for working on pyreverse :)