fix(build): Disable closing milestones during release (#188)

The CI user doesn't have permissions for that.

This PR also shortens the release name (it didn't fit in the right panel on the repository landing page) and removes the unused `release.github.commitAuthor` section.

Author: adutra

build-logic/src/main/kotlin/authmgr-jreleaser.gradle.kts

@@ -123,17 +123,14 @@ gradle.projectsEvaluated {
 
     release {
       github {
-        releaseName.set("{{projectNameCapitalized}} {{projectVersionNumber}}")
+        releaseName.set("AuthManager {{projectVersionNumber}}")
         repoOwner.set("dremio")
         name.set("iceberg-auth-manager")
         branch.set("main")
         tagName.set("authmgr-{{projectVersion}}")
-        commitAuthor {
-          name.set("{{projectNameCapitalized}} Release Workflow [bot]")
-          email.set("authmgr-release-workflow-noreply@dremio.com")
-        }
         milestone {
-          close.set(true)
+          // TODO enable when the CI user has permissions to close milestones
+          close.set(false)
           name.set("{{projectVersionNumber}}")
         }
         issues {