Merge branch 'w32-tests' into 'main'

Various win32 test fixes

See merge request GNOME/glib!2952

gobject/tests/gobject-query.py

@@ -55,12 +55,6 @@ class TestGobjectQuery(unittest.TestCase):
 
     def runGobjectQuery(self, *args):
         argv = [self.__gobject_query]
-
-        # shebang lines are not supported on native
-        # Windows consoles
-        if os.name == "nt":
-            argv.insert(0, sys.executable)
-
         argv.extend(args)
         print("Running:", argv)
 
@@ -75,7 +69,8 @@ class TestGobjectQuery(unittest.TestCase):
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
             env=env,
-            universal_newlines=True,
+            text=True,
+            encoding='utf-8',
         )
         info.check_returncode()
         out = info.stdout.strip()