fix(zsh): set `PSQL_EDITOR`

.config/zsh/.zshrc

@@ -16,6 +16,7 @@ fi
 
 # Use `nvim` as editor, preferring current instance if nested
 export EDITOR="${DOTFILES_DIR}/.scripts/nvim_editor.zsh"
+export PSQL_EDITOR="vi"
 
 # Fixes plugin keymap conflicts
 export ZVM_INIT_MODE=sourcing