chore: update repository configuration to use GitHub package registry and remove Gitea credentials

Author: naijun0403

settings.gradle.kts

@@ -12,15 +12,11 @@ dependencyResolutionManagement {
         google()
         maven("https://jitpack.io")
         maven {
-            url = uri("https://git.naijun.dev/api/packages/revanced/maven")
-
-            credentials<HttpHeaderCredentials>(HttpHeaderCredentials::class.java) {
-                name = "Authorization"
-                value = "token ${extra["gitea.accessToken"] as String? ?: System.getenv("GITEA_TOKEN")}"
-            }
-
-            authentication {
-                register("header", HttpHeaderAuthentication::class.java)
+            // A repository must be specified for some reason. "registry" is a dummy.
+            url = uri("https://maven.pkg.github.com/amplerevanced/registry")
+            credentials {
+                username = System.getenv("GITHUB_ACTOR") ?: extra["gpr.user"] as String?
+                password = System.getenv("GITHUB_TOKEN") ?: extra["gpr.key"] as String?
             }
         }
         maven {