Switch to upstream schema

Author: testower

gbfs-validator-java/pom.xml

@@ -45,8 +45,8 @@
     </scm>
     <properties>
         <jdk.version>17</jdk.version>
-        <gbfsGithubUrl>https://github.com/entur/gbfs-json-schema/archive/refs/tags/v3.1-RC2.zip</gbfsGithubUrl>
-        <schemaVersion>3.1-RC2</schemaVersion>
+        <gbfsGithubUrl>https://github.com/MobilityData/gbfs-json-schema/archive/refs/tags/v4.0.0.zip</gbfsGithubUrl>
+        <schemaVersion>4.0.0</schemaVersion>
 
         <everit-json-schema.version>1.14.6</everit-json-schema.version>
         <slf4j.version>2.0.17</slf4j.version>