GHSA-G3RH-RRHP-JHH9 Symfony has an incorrect response from Validator when input ends with `\n`

Description It is possible to trick a Validator configured with a regular expression using the $ metacharacters, with an input ending with \n. Resolution Symfony now uses the D regex modifier to match the entire input. The patch for this issue is available here for branch 5.4. Credits We would li...