chore: suppress deprecation notices for test_all imports

Signed-off-by: Brian Harring <ferringb@gmail.com>

Author: ferringb

src/snakeoil/test/code_quality.py

@@ -111,13 +111,14 @@ def test_has__all__(self, subtests):
                 assert hasattr(module, "__all__"), "__all__ is missing but should exist"
 
     def test_valid__all__(self, subtests):
-        for module in self.collect_modules():
-            with subtests.test(module=module.__name__):
-                if attrs := getattr(module, "__all__", ()):
-                    missing = {attr for attr in attrs if not hasattr(module, attr)}
-                    assert not missing, (
-                        f"__all__ refers to exports that don't exist: {missing!r}"
-                    )
+        with deprecation.suppress_deprecations():
+            for module in self.collect_modules():
+                with subtests.test(module=module.__name__):
+                    if attrs := getattr(module, "__all__", ()):
+                        missing = {attr for attr in attrs if not hasattr(module, attr)}
+                        assert not missing, (
+                            f"__all__ refers to exports that don't exist: {missing!r}"
+                        )
 
 
 class ExpiredDeprecations(NamespaceCollector, still_abstract=True):