Drupal Upgrade Error:
composer update --with-all-dependencies
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
Problem 1
- drupal/core[8.0.0-beta16, ..., 8.3.0-rc2] require doctrine/common 2.5.* -> found doctrine/common[v2.5.0-beta1, ..., 2.5.x-dev] but it conflicts with your root composer.json require (^3.4).
- drupal/core[8.3.0, ..., 8.7.x-dev] require doctrine/common ^2.5 -> found doctrine/common[v2.5.0-beta1, ..., 2.13.x-dev] but it conflicts with your root composer.json require (^3.4).
- drupal/core 8.0.0-beta6 requires doctrine/common dev-master#a45d110f71c323e29f41eb0696fa230e3fa1b1b5 -> found doctrine/common[dev-remove-int-cast, 2.1.3, ..., 2.13.x-dev, 3.0.0, ..., 3.5.x-dev] but it does not match the constraint.
- drupal/core[8.0.0-beta7, ..., 8.0.0-beta15] require doctrine/common ~2.4.2 -> found doctrine/common[v2.4.2, v2.4.3, 2.4.x-dev] but it conflicts with your root composer.json require (^3.4).
- drupal/core[8.8.0-alpha1, ..., 8.9.x-dev] require doctrine/common ^2.7 -> found doctrine/common[v2.7.0, ..., 2.13.x-dev] but it conflicts with your root composer.json require (^3.4).
- drupal/core[8.9.11, ..., 8.9.20] require php ^7.0.8 -> your php version (8.1.20) does not satisfy that requirement.
- drupal/linkit[4.4.0, ..., 4.x-dev] require drupal/core ~8.0 -> satisfiable by drupal/core[8.0.0-beta6, ..., 8.9.x-dev].
- Root composer.json requires drupal/linkit ^4.4 -> satisfiable by drupal/linkit[4.4.0, 4.x-dev].
Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.