golangci-lint fixes

pkg/storage/bucket/named_stores_test.go

@@ -86,7 +86,8 @@ func TestNamedStores_OverrideConfig(t *testing.T) {
 			BucketName: "foo",
 		},
 	}
-	namedStoreCfg.OverrideConfig(&storeCfg, "store-1", GCS)
+	err := namedStoreCfg.OverrideConfig(&storeCfg, "store-1", GCS)
+	require.NoError(t, err)
 	require.Equal(t, "bar", storeCfg.GCS.BucketName)
 	require.Equal(t, 100, storeCfg.GCS.ChunkBufferSize)
 }