bug #163 [HOTFIX] Conflict with the newest amphp/amp (lchrusciel)

This PR was merged into the 1.7-dev branch.

Discussion
----------

| Q               | A
| --------------- | -----
| Bug fix?        | no/yes
| New feature?    | no/yes
| BC breaks?      | no/yes
| Deprecations?   | no/yes <!-- don't forget to update the UPGRADE-*.md file -->
| Related tickets | fixes #X, partially #Y, mentioned in #Z
| License         | MIT


Commits
-------

c31dd68 [HOTFIX] Conflict with the newest amphp/amp

composer.json

@@ -90,7 +90,7 @@
         ]
     },
     "conflict": {
-        "amphp/amp": "2.4.3"
+        "amphp/amp": "^2.4.3"
     },
     "extra": {
         "branch-alias": {