jupyterlab: add ninja build dep for ipykernel

[chenrui333]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

• seeing regression build failure in rust 1.83.0 #199379

        LookupError: https://files.pythonhosted.org/packages/b4/49/4f1a79f99f4c3eb5d22f943bba14832923bb44423254d5089d38a9f6da63/ninja-1.11.1.2.tar.gz (from https://pypi.org/simple/ninja/) (requires-python:>=3.7) is already being built: ninja>=1.5 from https://files.pythonhosted.org/packages/b4/49/4f1a79f99f4c3eb5d22f943bba14832923bb44423254d5089d38a9f6da63/ninja-1.11.1.2.tar.gz
        error: subprocess-exited-with-error