Switch script-header to bash

scripts/build.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 scriptPath_file=$(dirname "${BASH_SOURCE[0]}")
 scriptPath_folder=$(realpath "${scriptPath_file}")

scripts/utils/prepare.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # --- VARIABLES ---
 # Load variables