minor #5048 Allow composer/semver ^2.0 and ^3.0 (thomasvargiu)

This PR was merged into the 2.15 branch.

Discussion
----------

Allow composer/semver ^2.0 and ^3.0

Allow composer/semver ^2.0 and ^3.0.

This will allow usage of composer 2.0.

This PR replace PR #4935 since there is no activity on that PR.

Commits
-------

5e32c78 Allow composer/semver ^2.0 and ^3.0

Author: SpacePossum

composer.json

@@ -17,7 +17,7 @@
         "php": "^5.6 || ^7.0",
         "ext-json": "*",
         "ext-tokenizer": "*",
-        "composer/semver": "^1.4",
+        "composer/semver": "^1.4 || ^2.0 || ^3.0",
         "composer/xdebug-handler": "^1.2",
         "doctrine/annotations": "^1.2",
         "php-cs-fixer/diff": "^1.3",