Fix touch not running on SnapRAID 12.3

SnapRAID 12.3 has changed the string of the diff ouput, causing the script not to catch it.
Now it works in both cases.
#92

Author: Oliver Cervera

snapraid-aio-script.sh

@@ -564,7 +564,7 @@ function chk_sync_warn(){
 function chk_zero(){
   echo "### SnapRAID TOUCH [$(date)]"
   echo "Checking for zero sub-second files."
-  TIMESTATUS=$($SNAPRAID_BIN -c $SNAPRAID_CONF status | grep 'You have [1-9][0-9]* files with zero sub-second timestamp\.' | sed 's/^You have/Found/g')
+  TIMESTATUS=$($SNAPRAID_BIN -c $SNAPRAID_CONF status | grep -E 'You have [1-9][0-9]* files with( a)? zero sub-second timestamp\.' | sed 's/^You have/Found/g')
   if [ -n "$TIMESTATUS" ]; then
     echo "$TIMESTATUS"
     echo "Running TOUCH job to timestamp. [$(date)]"