Bash: apply patches 12 through 18 as well

Those fix some unintentional behaviour regarding autocompletion I
stumbled across the other day. While there seems nothing security
relevant in this, it irons out a few bugs.

The full and up-to-date list of all Bash 5.0 patches can be obtained
from https://ftp.gnu.org/gnu/bash/bash-5.0-patches/ .

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

lfs/bash

@@ -1,7 +1,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2007-2019  IPFire Team  <info@ipfire.org>                     #
+# Copyright (C) 2007-2020  IPFire Team  <info@ipfire.org>                     #
 #                                                                             #
 # This program is free software: you can redistribute it and/or modify        #
 # it under the terms of the GNU General Public License as published by        #
@@ -87,7 +87,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	sed -e "s/filename, RTLD_LAZY/filename, RTLD_NOW/" \
 		-i $(DIR_APP)/builtins/enable.def
 
-	for i in $$(seq 1 11); do \
+	for i in $$(seq 1 18); do \
 		cd $(DIR_APP) && patch -Np0 < $(DIR_SRC)/src/patches/bash/bash50-$$(printf "%03d" "$${i}") || exit 1; \
 	done