chore: change maven repo api endpoint (#73)

Author: shabaraba

build.gradle

@@ -146,14 +146,12 @@ publishing {
     }
     repositories {
         maven {
-            def releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2"
-            def snapshotsRepoUrl = "https://oss.sonatype.org/content/repositories/snapshots"
+            def releasesRepoUrl = "https://ossrh-staging-api.central.sonatype.com/service/local/staging/deploy/maven2/"
+            def snapshotsRepoUrl = "https://central.sonatype.com/repository/maven-snapshots/"
             url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
-            if (project.hasProperty('sonatypeUsername') && project.hasProperty('sonatypePassword')) {
-                credentials {
-                    username = "${sonatypeUsername}"
-                    password = "${sonatypePassword}"
-                }
+            credentials {
+                username = findProperty('centralPortalUsername')
+                password = findProperty('centralPortalPassword')       
             }
         }
     }