Update deluge-meta.rb to install typing-extensions with pip

[2600box]

python-typing-extensions was removed from brew, presumably in favour of pip.

https://formulae.brew.sh/formula/python-typing-extensions

Responding to this issue; #23

[Amar1729]

Thanks for the PR @2600box ! a few notes:

• you'll also want to remove the depends_on "python-typing-extensions"
• is there any reason this dep can't be added as a resource block? (i.e. using homebrew-pypi-poet?) I think that would elide the need for doing a system libexec/pip install manually. (*see below)
• you can bump the revision to 5
• you could also remove the caveats section entirely if you like (woo!)

---

*if you haven't done this before, this is pretty much what i do:

python3.12 -m venv venv
source venv/bin/activate

pip install deluge wheel homebrew-pypi-poet
poet wheel > resources.rb 
poet deluge >> resources.rb

# then i manually copy the content of resources.rb over to the right place in Formula/deluge-meta.rb

ps. make sure to run brew audit deluge-meta, as that's one of the checks the CI will run.