fix: increase the count of ping retries

scripts/backup.sh

@@ -176,7 +176,7 @@ upload
 clear_dir
 clear_history
 
-send_ping
 send_mail_content "TRUE" "The file was successfully uploaded at $(date +"%Y-%m-%d %H:%M:%S %Z")."
+send_ping
 
 color none ""

scripts/includes.sh

@@ -121,7 +121,7 @@ function send_ping() {
         return
     fi
 
-    wget "${PING_URL}" -T 10 -t 5 -O /dev/null -q
+    wget "${PING_URL}" -T 15 -t 10 -O /dev/null -q
     if [[ $? != 0 ]]; then
         color red "ping sending failed"
     else