Adds Lint Against Non-TXT UpdatePaths Scripts (#72785)

Prevents Regression Found In #72779 (someone putting an UpdatePaths
script that doesn't end in .txt through) from happening again.

tools/ci/check_grep.sh

@@ -173,6 +173,14 @@ do
     done < <(jq -r '[.map_file] | flatten | .[]' $json)
 done
 
+part "updatepaths validity"
+lines=$(find tools/UpdatePaths/Scripts -type f ! -name "*.txt" | wc -l)
+if [ $lines -gt 0 ]; then
+    echo
+    echo -e "${RED}ERROR: Found an UpdatePaths File that doesn't end in .txt! Please add the proper file extension!${NC}"
+    st=1
+fi;
+
 section "515 Proc Syntax"
 part "proc ref syntax"
 if $grep '\.proc/' $code_x_515 ; then