Set Firefox minimum version to 115

Related discussion:
uBlockOrigin/uBlock-issues#3878 (comment)

Author: gorhill

platform/firefox/manifest.json

@@ -17,13 +17,13 @@
   "browser_specific_settings": {
     "gecko": {
       "id": "uBlock0@raymondhill.net",
-      "strict_min_version": "128.0",
+      "strict_min_version": "115.0",
       "data_collection_permissions": {
         "required": [ "none" ]
       }
     },
     "gecko_android": {
-      "strict_min_version": "128.0"
+      "strict_min_version": "115.0"
     }
   },
   "commands": {