fix(tests): update to match add change

tests/testsuite/cargo_add/multiple_conflicts_with_features/stderr.log

@@ -1 +1 @@
-error: feature `nose` must be qualified by the dependency its being activated for, like `my-package1/nose`, `your-face/nose`
+error: feature `nose` must be qualified by the dependency it's being activated for, like `my-package1/nose`, `your-face/nose`