composer: Bump psr/log version constraints

We support basically any version, so let's accept 2..x and 3.x as well

Author: tdgroot

composer.json

@@ -17,6 +17,6 @@
     },
     "require": {
         "deployer/deployer": "^7.0",
-        "psr/log": "^1.0"
+        "psr/log": "^1.0||^2.0||^3.0"
     }
 }