fix: migrate to Central Portal for publishing Maven artifacts (#2011)

Part of
#1953.

Followed
https://central.sonatype.org/pages/ossrh-eol/#publishing-to-central-portal.

Author: krzema12

build.gradle.kts

@@ -11,8 +11,8 @@ version = "3.4.1-SNAPSHOT"
 nexusPublishing {
     repositories {
         sonatype {
-            nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
-            snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))
+            nexusUrl.set(uri("https://ossrh-staging-api.central.sonatype.com/service/local/"))
+            snapshotRepositoryUrl.set(uri("https://central.sonatype.com/repository/maven-snapshots/"))
         }
     }
     packageGroup.set("io.github.typesafegithub")

docs/user-guide/nightly-builds.md

@@ -6,7 +6,7 @@ case, you can use snapshots published for each commit to the `main` branch.
 To use a given "snapshot" version, e.g. `1.3.2-SNAPSHOT`, replace your scripts' preamble with:
 
 ```kotlin
-@file:Repository("https://s01.oss.sonatype.org/content/repositories/snapshots/")
+@file:Repository("https://central.sonatype.com/repository/maven-snapshots/")
 @file:DependsOn("io.github.typesafegithub:github-workflows-kt:1.3.2-SNAPSHOT")
 ```