Fix linter violation caused by exact version constraint.

Author: Potherca

solid/composer.json

@@ -31,7 +31,7 @@
         "pdsinterop/flysystem-rdf": "^0.5",
         "pdsinterop/solid-auth": "^0.7",
         "pdsinterop/solid-crud": "^0.6",
-        "psr/log" : "1.1.4"
+        "psr/log" : "^1.1"
     },
     "require-dev": {
         "phpunit/phpunit": "^8 || ^9"