brew.sh: always use 7 chars for HOMEBREW_VERSION.
brew.sh: always use 7 chars for HOMEBREW_VERSION.

This avoids inconsistency based on Git versions.

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