[pylint] Pylint 2.10 - unspecified-encoding

Pylint 2.10 added new default checks [1]:

unspecified-encoding:
  Emitted when open() is called without specifying an encoding [2]

[1] https://pylint.pycqa.org/en/latest/whatsnew/2.10.html
[2] https://github.com/PyCQA/pylint/issues/3826

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/version.py

@@ -126,8 +126,8 @@ GIT_URL = "{GIT_URL}"
 GIT_BRANCH = "{GIT_BRANCH}"
 """
         with open(
-            os.path.join(os.path.dirname(__file__), "version_frozen.py"), "w"
-        ) as f:
+                os.path.join(os.path.dirname(__file__), "version_frozen.py"),
+                "w", encoding="utf8") as f:
             f.write(python_code)
             print(f"{f.name} created")
     else:

searx_extra/update/update_external_bangs.py

@@ -154,5 +154,5 @@ if __name__ == '__main__':
         'version': bangs_version,
         'trie': parse_ddg_bangs(fetch_ddg_bangs(bangs_url))
     }
-    with open(get_bangs_filename(), 'w') as fp:
+    with open(get_bangs_filename(), 'w', encoding="utf8") as fp:
         json.dump(output, fp, ensure_ascii=False, indent=4)

searx_extra/update/update_osm_keys_tags.py

@@ -205,5 +205,5 @@ if __name__ == '__main__':
         'keys': optimize_keys(get_keys()),
         'tags': optimize_tags(get_tags()),
     }
-    with open(get_osm_tags_filename(), 'w') as f:
+    with open(get_osm_tags_filename(), 'w', encoding="utf8") as f:
         json.dump(result, f, indent=4, ensure_ascii=False)