updating build config with credentials

Author: jkyberneees

build.gradle.kts

@@ -127,6 +127,10 @@ publishing {
         maven {
             name = "GitHubPackages"
             url = uri("https://maven.pkg.github.com/BackendStack21/realtime-pubsub-client-java")
+            credentials {
+                username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME_GITHUB") ?: System.getenv("GITHUB_ACTOR")
+                password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN_GITHUB") ?: System.getenv("GITHUB_TOKEN")
+            }
         }
     }
 }