Let composer.json pass strict checks (#5)

Author: mlocati

.github/workflows/tests.yml

@@ -78,7 +78,7 @@ jobs:
     strategy:
       matrix:
         ccm-version:
-          - 8.5.12
+          - 8.5.2
           - "8.5"
           - "9.0"
           - "9.1"

composer.json

@@ -23,10 +23,11 @@
         }
     ],
     "support": {
-        "issues": "https://github.com/concrete5-community/maxmind_geolocator/issues"
+        "issues": "https://github.com/concrete5-community/maxmind_geolocator/issues",
+        "source": "https://github.com/concrete5-community/maxmind_geolocator"
     },
     "require": {
-        "concrete5/core": ">=8.3.0",
+        "concrete5/core": "^8.3 || ^9",
         "geoip2/geoip2": "^2.9.0",
         "php" : ">= 5.5.9"
     },