Update debian script hash

src/freedombone-image

                 return
             fi
             debian_script_hash=$(sha256sum /usr/share/debootstrap/scripts/${DEBIAN_VERSION} | awk -F ' ' '{print $1}')
-            expected_debian_script_hash='94e01603091748e8a6a9d2c3beefec29f2a174d989500f81be4ab767830f4489'
+            expected_debian_script_hash='620fa84c7ef64d10349aed38fa9cc2e7f00a6fcd1bc425f33ca2b57cc946fd0c'
             if [[ "$debian_script_hash" != "$expected_debian_script_hash" ]]; then
                 echo $"Invalid hash for debootstrap ${DEBIAN_VERSION} script"
                 return