feat(bash): disable Homebrew auto update and analytics

roles/bash/files/profile

@@ -21,7 +21,11 @@ export LESS="-i -j.49 -M -R -z-2"
 export LESSHISTFILE="$XDG_CACHE_HOME/less/history"
 export LESSHISTSIZE=1000
 export LOCAL_PREFIX="/usr/local"
-command -v brew &>/dev/null && LOCAL_PREFIX="$(brew --prefix)"
+if command -v brew &>/dev/null; then
+    LOCAL_PREFIX="$(brew --prefix)"
+    export HOMEBREW_NO_ANALYTICS=1
+    export HOMEBREW_NO_AUTO_UPDATE=1
+fi
 MANPATH="$(unset MANPATH; manpath)"
 export MANPATH
 export PAGER=less