fix: raise Invalid for non-string input in Replace validator

Replace.__call__ passed non-string values straight to re.Pattern.sub(),
which raises an unhandled TypeError. Wrap it and raise MatchInvalid
(honouring a custom msg), matching how Match reports the same case.

Author: gaoflow

voluptuous/tests/tests.py

@@ -2375,3 +2375,16 @@ def test_complex_required_keys_with_specific_value_validation():
     error_msg = str(exc_info.value)
     assert "required" not in error_msg.lower()  # No "required field missing" error
     assert "value must be at most 100" in error_msg  # Range validation error
+
+
+def test_replace_non_string_input():
+    """Verify that Replace raises Invalid for non-string input."""
+    replace = Replace('hello', 'goodbye')
+    assert replace('hello world') == 'goodbye world'
+    for value in (42, None, ['hello']):
+        with pytest.raises(Invalid, match='expected string or buffer'):
+            replace(value)
+
+    replace2 = Replace('x', 'y', msg='must be a string')
+    with pytest.raises(Invalid, match='must be a string'):
+        replace2(123)

voluptuous/validators.py

@@ -469,7 +469,10 @@ def __init__(
         self.msg = msg
 
     def __call__(self, v):
-        return self.pattern.sub(self.substitution, v)
+        try:
+            return self.pattern.sub(self.substitution, v)
+        except TypeError:
+            raise MatchInvalid(self.msg or 'expected string or buffer')
 
     def __repr__(self):
         return 'Replace(%r, %r, msg=%r)' % (