add back ScalarsConverterFactory

Author: gabrielittner

central-portal/build.gradle.kts

@@ -5,4 +5,5 @@ plugins {
 dependencies {
   implementation(libs.okhttp)
   implementation(libs.retrofit)
+  implementation(libs.retrofit.converter.scalars)
 }

central-portal/src/main/kotlin/com/vanniktech/maven/publish/portal/SonatypeCentralPortal.kt

@@ -8,6 +8,7 @@ import okhttp3.MultipartBody
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody.Companion.asRequestBody
 import retrofit2.Retrofit
+import retrofit2.converter.scalars.ScalarsConverterFactory
 
 public class SonatypeCentralPortal(
   private val baseUrl: String,
@@ -29,6 +30,7 @@ public class SonatypeCentralPortal(
       .Builder()
       .client(okHttpClient)
       .baseUrl(baseUrl)
+      .addConverterFactory(ScalarsConverterFactory.create())
       .build()
 
     retrofit.create(SonatypeCentralPortalService::class.java)

gradle/libs.versions.toml

@@ -21,6 +21,7 @@ kotlin-reflect = { module = "org.jetbrains.kotlin:kotlin-reflect", version.ref =
 kotlin-plugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
 
 retrofit = "com.squareup.retrofit2:retrofit:3.0.0"
+retrofit-converter-scalars = "com.squareup.retrofit2:converter-scalars:3.0.0"
 
 junit-jupiter = "org.junit.jupiter:junit-jupiter:5.13.3"
 junit-engine = { module = "org.junit.platform:junit-platform-engine", version.ref = "junit-platform" }