sean Thanks Sean, now i got this:
Problem 1
- Installation request for friendsofphp/php-cs-fixer (locked at v2.0.0, required as ^2.0) -> satisfiable by friendsofphp/php-cs-fixer[v2.0.0].
- friendsofphp/php-cs-fixer v2.0.0 requires php ^5.3.6 || >=7.0 <7.2 -> your PHP version (7.3.25) does not satisfy that requirement.
Problem 2
- typo3/cms-backend v8.7.9 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.8 requires php >=7.0.0 <=7.1.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.7 requires php >=7.0.0 <=7.1.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.22 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.21 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.20 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.19 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.18 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.17 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.16 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.15 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.14 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.13 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.12 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.11 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- typo3/cms-backend v8.7.10 requires php >=7.0.0 <=7.2.99 -> your PHP version (7.3.25) does not satisfy that requirement.
- Installation request for typo3/cms No version set (parsed as 1.0.0) -> satisfiable by typo3/cms[No version set (parsed as 1.0.0)].
- typo3/testing-framework 1.0.1 requires typo3/cms-backend ^8.5 -> satisfiable by typo3/cms-backend[v8.7.10, v8.7.11, v8.7.12, v8.7.13, v8.7.14, v8.7.15, v8.7.16, v8.7.17, v8.7.18, v8.7.19, v8.7.20, v8.7.21, v8.7.22, v8.7.23, v8.7.24, v8.7.25, v8.7.26, v8.7.27, v8.7.28, v8.7.29, v8.7.30, v8.7.31, v8.7.32, v8.7.7, v8.7.8, v8.7.9].
- don't install typo3/cms-backend v8.7.23|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.24|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.25|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.26|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.27|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.28|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.29|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.30|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.31|remove typo3/cms No version set (parsed as 1.0.0)
- don't install typo3/cms-backend v8.7.32|remove typo3/cms No version set (parsed as 1.0.0)
- Installation request for typo3/testing-framework (locked at 1.0.1, required as ~1.0.0) -> satisfiable by typo3/testing-framework[1.0.1].
Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.
Installation failed, reverting ./composer.json to its original content.