bin/brew: use full path for xcode-select
bin/brew: use full path for xcode-select

Closes Homebrew/homebrew#48197.

Signed-off-by: Xu Cheng <9a05244150b861e40c78843b801eed71bca54eac@me.com>

Homebrew/brew,claui/brew,sjackman/homebrew,Linuxbrew/brew,mahori/brew,tonyg/homebrew,aw1621107/brew,staticfloat/brew,hanxue/linuxbrew,nandub/brew,reelsense/brew,Linuxbrew/brew,mahori/brew,pseudocody/brew,zmwangx/brew,mgrimes/brew,Homebrew/brew,jmsundar/brew,jmsundar/brew,palxex/brew,alyssais/brew,mgrimes/brew,toonetown/homebrew,MikeMcQuaid/brew,tonyg/homebrew,MikeMcQuaid/brew,EricFromCanada/brew,ilovezfs/brew,staticfloat/brew,rwhogg/brew,nandub/brew,reitermarkus/brew,alyssais/brew,mistydemeo/homebrew,bfontaine/brew,jmsundar/brew,pseudocody/brew,zmwangx/brew,EricFromCanada/brew,sjackman/homebrew,reelsense/brew,Linuxbrew/brew,EricFromCanada/brew,bfontaine/brew,EricFromCanada/brew,rwhogg/brew,JCount/brew,gregory-nisbet/brew,DomT4/brew,nandub/brew,muellermartin/dist,hanxue/linuxbrew,claui/brew,ilovezfs/brew,pseudocody/brew,aw1621107/brew,toonetown/homebrew,claui/brew,maxim-belkin/brew,palxex/brew,gregory-nisbet/brew,tonyg/homebrew,Homebrew/brew,reitermarkus/brew,DomT4/brew,konqui/brew,bfontaine/brew,hanxue/linuxbrew,MikeMcQuaid/brew,Linuxbrew/brew,reitermarkus/brew,mahori/brew,MikeMcQuaid/brew,Homebrew/brew,AnastasiaSulyagina/brew,konqui/brew,staticfloat/brew,vitorgalvao/brew,amar-laksh/brew_sudo,mistydemeo/homebrew,JCount/brew,vitorgalvao/brew,muellermartin/dist,vitorgalvao/brew,konqui/brew,JCount/brew,gordonmcshane/homebrew,mistydemeo/homebrew,reelsense/brew,reitermarkus/brew,AnastasiaSulyagina/brew,AnastasiaSulyagina/brew,maxim-belkin/brew,sjackman/homebrew,vitorgalvao/brew,konqui/brew,gregory-nisbet/brew,claui/brew,alyssais/brew,zmwangx/brew,muellermartin/dist,ilovezfs/brew,DomT4/brew,JCount/brew,sjackman/homebrew,rwhogg/brew,mahori/brew,gordonmcshane/homebrew,aw1621107/brew,toonetown/homebrew,nandub/brew,palxex/brew,DomT4/brew,mgrimes/brew,maxim-belkin/brew,amar-laksh/brew_sudo,gordonmcshane/homebrew,amar-laksh/brew_sudo