Ignore links to GitHub user and organisation profiles (#7308)

Author: jtpio

.github/workflows/build.yml

@@ -175,7 +175,7 @@ jobs:
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
       - uses: jupyterlab/maintainer-tools/.github/actions/check-links@v1
         with:
-          ignore_links: 'https://playwright.dev/docs/test-cli/ https://blog.jupyter.org/the-big-split-9d7b88a031a7 https://blog.jupyter.org/jupyter-ascending-1bf5b362d97e https://mybinder.org/v2/gh/jupyter/notebook/main https://nbviewer.jupyter.org https://stackoverflow.com'
+          ignore_links: 'https://playwright.dev/docs/test-cli/ https://blog.jupyter.org/the-big-split-9d7b88a031a7 https://blog.jupyter.org/jupyter-ascending-1bf5b362d97e https://mybinder.org/v2/gh/jupyter/notebook/main https://nbviewer.jupyter.org https://stackoverflow.com https://github.com/[^/]+/?$'
           ignore_glob: 'ui-tests/test/notebooks/*'
 
   test_lint: