Fix example updating test

If we tag an existing commit that has been pushed to main, then the copier
update on the old commit id will be generated with the new tag name, which
means the link will not be updated. As this only affects the example repo
which is the only thing that points to main then we ignore it

Author: coretl

tests/test_example.py

@@ -83,7 +83,15 @@ def test_example_repo_updates(tmp_path: Path):
     run("git commit -am 'Update src'")
     run(f"copier update --trust --vcs-ref=HEAD --data-file {TOP}/example-answers.yml")
     output = run(
-        "diff -ur --exclude=.git --ignore-matching-lines='_commit: '"
-        f" {generated_path} {example_path}"
+        # Git directory expected to be different
+        "diff -ur --exclude=.git "
+        # The commit hash is different for some reason
+        "--ignore-matching-lines='^_commit: ' "
+        # If we tag an existing commit that has been pushed to main, then the copier
+        # update on the old commit id will be generated with the new tag name, which
+        # means the link will not be updated. As this only affects the example repo
+        # which is the only thing that points to main then we ignore it
+        "--ignore-matching-lines='^For more information on common tasks like setting' "
+        f"{generated_path} {example_path}"
     )
     assert not output, output