Your lock file does not contain a compatible set of packages. Please run composer update.
Problem 1
- giggsey/locale is locked to version 2.6 and an update of this package was not requested.
- giggsey/locale 2.6 requires php >=7.2 -> your php version (5.6.40) does not satisfy that requirement.
Problem 2
- symfony/polyfill-mbstring is locked to version v1.31.0 and an update of this package was not requested.
- symfony/polyfill-mbstring v1.31.0 requires php >=7.2 -> your php version (5.6.40) does not satisfy that requirement.
Problem 3
- giggsey/locale 2.6 requires php >=7.2 -> your php version (5.6.40) does not satisfy that requirement.
- giggsey/libphonenumber-for-php 8.13.45 requires giggsey/locale ^1.7|^2.0 -> satisfiable by giggsey/locale[2.6].
- giggsey/libphonenumber-for-php is locked to version 8.13.45 and an update of this package was not requested.