CI/CD - fix error in bash script

Author: gkv311

.github/workflows/screenshot.sh

@@ -11,7 +11,7 @@ rm -f "$anImg"
 scrot -d $aDelay -F "$anImg"
 
 anImgSize=$(wc -c <"$anImg")
-if [ $actualsize -lt 2000 ]; then
+if [ $actualsize < 2000 ]; then
   # retry one more time
   mv -f "$anImg" "back-first-${anImg}"
   scrot -d 1 -F "$anImg"