Add support for Fedora 42

Closes #1091

dangerzone/gui/main_window.py

@@ -3,7 +3,6 @@ import os
 import platform
 import tempfile
 import typing
-from multiprocessing import freeze_support
 from multiprocessing.pool import ThreadPool
 from pathlib import Path
 from typing import List, Optional
@@ -1221,9 +1220,6 @@ class DocumentsListWidget(QtWidgets.QListWidget):
     def start_conversion(self) -> None:
         if not self.thread_pool_initized:
             max_jobs = self.dangerzone.isolation_provider.get_max_parallel_conversions()
-            # Call freeze_support() to avoid passing unknown options to the subprocess.
-            # See https://github.com/freedomofpress/dangerzone/issues/873
-            freeze_support()
             self.thread_pool = ThreadPool(max_jobs)
 
         for doc in self.docs_list:

dev_scripts/qa.py

@@ -1022,7 +1022,7 @@ class QAFedora(QALinux):
         )
 
 
-class QAFedora42(QAFedora):
+class QAFedora41(QAFedora):
     VERSION = "42"
 
 

tests/test_docs_large

@@ -1 +1 @@
-Subproject commit 0068ffcb67f45fe9e3a082649493b7c8db5d1473
+Subproject commit 0faa21eb4e33ec1a3212468dcb6db3a668cf8fc8