os/mac/xcode: bump minimum CLT version to 12.5
os/mac/xcode: bump minimum CLT version to 12.5

JCount/brew,nandub/brew,MikeMcQuaid/brew,JCount/brew,nandub/brew,MikeMcQuaid/brew,EricFromCanada/brew,Homebrew/brew,JCount/brew,Homebrew/brew,EricFromCanada/brew,EricFromCanada/brew,nandub/brew,Homebrew/brew,EricFromCanada/brew,nandub/brew,JCount/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,Homebrew/brew