nesbot/carbon is requiring an older, incompatible version of symfony/translation, which is causing the conflict when trying to update to Drupal 10.3.x
Your requirements could not be resolved to an installable set of packages.
Problem 1
- drupal/core-recommended[10.3.0, ..., 10.3.3] require symfony/validator ~v6.4.7 -> satisfiable by symfony/validator[v6.4.7, ..., v6.4.11].
- symfony/validator[v6.4.3, ..., v6.4.11] conflict with symfony/translation <5.4.35|>=6.0,<6.3.12|>=6.4,<6.4.3|>=7.0,<7.0.3.
- nesbot/carbon 2.68.1 requires symfony/translation ^3.4 || ^4.0 || ^5.0 || ^6.0 -> satisfiable by symfony/translation[v6.3.0].
- drupal/socialfeed 2.0.0-beta2 requires nesbot/carbon ^2.59 -> satisfiable by nesbot/carbon[2.68.1].
- drupal/socialfeed is locked to version 2.0.0-beta2 and an update of this package was not requested.
- Root composer.json requires drupal/core-recommended ^10.3 -> satisfiable by drupal/core-recommended[10.3.0, 10.3.1, 10.3.2, 10.3.3].
Needs review
3.0
Code