Ignore long lines containing links

Allow long lines containing https:// or www.

.github/workflows/validate_commit_message.yml

@@ -46,7 +46,7 @@ jobs:
           fi
 
           for line in $commit_body; do
-            if [ "${#line}" -gt 120 ]; then
+            if [ "${#line}" -gt 120 ] && [[ ! "$line" =~ (https?://|www\.) ]]; then
               echo "Error: the following line of the commit body is too long (max: 120 characters):"
               echo "> $line"
               exit 1