bash: add homebrew's security settings

etc/shell/bash/bashrc_macos

@@ -1,5 +1,10 @@
 PATH="$SHELLRC/bin:$SHELLRC/bin/scripts:$HOME/.rbenv/shims:/usr/local/opt/coreutils/libexec/gnubin/:/Applications/:~/go/bin/:~/Library/Python/3.7/bin/:$HOME/.cabal/bin:${GHCUP_INSTALL_BASE_PREFIX:=$HOME}/.ghcup/bin:$PATH:~/.cargo/bin"
 
+# Homebrew settings
+export HOMEBREW_NO_ANALYTICS=1
+export HOMEBREW_NO_INSECURE_REDIRECT=1
+export HOMEBREW_CASK_OPTS="--require-sha"
+
 test -e "${HOME}/.iterm2_shell_integration.bash" && source "${HOME}/.iterm2_shell_integration.bash"
 
 [[ -f $BASHRC/aliases_macos ]] && MACOS_ALIASES="$BASHRC/aliases_macos" \