portaudio: rebuild
portaudio: rebuild

Update PortAudio git repo url

The PortAudio repo is now hosted on GitHub as linked from their website: http://www.portaudio.com/usinggit.html.
The old link is a repo that is several months stale.

Tested by editing the formula locally and running:
```bash
brew uninstall --force portaudio
brew install --HEAD portaudio
brew test portaudio
brew audit --strict portaudio
brew style portaudio
```

Closes #65972.

Signed-off-by: Sean Molenaar <2b250e3fea88cfef248b497ad5fc17f7dc435154@users.noreply.github.com>
Signed-off-by: BrewTestBot <8a898ee6867e4f2028e63d2a6319b2224641c06c@users.noreply.github.com>

Homebrew/homebrew-core,spaam/homebrew-core,mbcoguno/homebrew-core,nandub/homebrew-core,stgraber/homebrew-core,lemzwerg/homebrew-core,Homebrew/homebrew-core,Linuxbrew/homebrew-core,uyjulian/homebrew-core,cblecker/homebrew-core,nbari/homebrew-core,stgraber/homebrew-core,spaam/homebrew-core,Moisan/homebrew-core,zyedidia/homebrew-core,sjackman/homebrew-core,uyjulian/homebrew-core,mbcoguno/homebrew-core,JCount/homebrew-core,adam-moss/homebrew-core,Moisan/homebrew-core,filcab/homebrew-core,lemzwerg/homebrew-core,makigumo/homebrew-core,chrisfinazzo/homebrew-core,chrisfinazzo/homebrew-core,cblecker/homebrew-core,dsXLII/homebrew-core,nandub/homebrew-core,mfikes/homebrew-core,Linuxbrew/homebrew-core,zyedidia/homebrew-core,dsXLII/homebrew-core,adam-moss/homebrew-core,mfikes/homebrew-core,filcab/homebrew-core,makigumo/homebrew-core,JCount/homebrew-core,nbari/homebrew-core,sjackman/homebrew-core,mbcoguno/homebrew-core