sequencer - fix shellcheck warnings

sequencer.sh

@@ -905,7 +905,7 @@ addConf() {
         else
           "${transferCmd}" "${source}" >> "${dest}"
         fi
-        sqr::echo -e "ok \n [i] Existing config saved to ${addConfBackup}"
+        sqr::printf 'ok\n [i] %s' "Existing config saved to ${addConfBackup}"
         return 0
       else
         sqr::echo "nok"
@@ -913,7 +913,7 @@ addConf() {
       fi
     fi
   else
-    sqr::echo -e "ok \n [i] no change requested"
+    sqr::printf 'ok\n [i] %s' "no change requested"
   fi
 
   # add configuration to missingConf file
@@ -1340,11 +1340,11 @@ execute() {
 
   if ! quiet ; then
     exists -f "step_${1}_alias" && stepAlias=$("step_${1}_alias")
-    printf "\n [%3d] " "${1}"
+    printf '\n [%3d] ' "${1}"
     if [ -n "${stepAlias}" ]; then
       echo -en "${col_orange}${stepAlias}${col_off}${_sqr_savePosAlias}"
       # Only add newline if step info() available
-      exists -f "step_${1}_info" && printf "\n%s" "${_sqr_indentExe}"
+      exists -f "step_${1}_info" && printf '\n%s' "${_sqr_indentExe}"
     else
       echo -en "${_sqr_savePosExe}"
     fi