Replace pkg_resources with importlib.resources for Python 3.14 compatibility

ebook_converter/utils/config_base.py

@@ -10,7 +10,7 @@ import pickle
 import re
 import traceback
 
-import pkg_resources
+from importlib.resources import files as _resource_files
 
 from ebook_converter.constants_old import config_dir
 from ebook_converter.constants_old import filesystem_encoding
@@ -591,8 +591,7 @@ def exec_tweaks(path):
 
 
 def default_tweaks_raw():
-    return pkg_resources.resource_filename('ebook_converter',
-                                           'data/default_tweaks.py')
+    return str(_resource_files('ebook_converter').joinpath('data/default_tweaks.py'))
 
 
 def read_tweaks():

ebook_converter/utils/localization.py

@@ -1,5 +1,5 @@
 import json
-import pkg_resources
+from importlib.resources import files
 
 
 def get_lang():
@@ -39,8 +39,7 @@ def _load_iso639():
     # excerpt form Calibre transform code which is executed during Calibre
     # build).
     if _iso639 is None:
-        src = pkg_resources.resource_filename('ebook_converter',
-                                              'data/iso_639-3.json')
+        src = str(files('ebook_converter').joinpath('data/iso_639-3.json'))
 
         with open(src, 'rb') as f:
             root = json.load(f)