fix(preprod): Mention build upload is non-experimental in CHANGELOG

Follow up from #2900
Also unhide the subcommand.

Author: chromy

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### New Features
+
+- Promote `sentry-cli build upload` command to non-experimental ([#2899](https://github.com/getsentry/sentry-cli/pull/2899)).
+
 ### Deprecations
 
 - Deprecated the `upload-proguard` subcommand's `--platform` flag ([#2863](https://github.com/getsentry/sentry-cli/pull/2863)). This flag appears to have been a no-op for some time, so we will remove it in the next major.

src/commands/build/mod.rs

@@ -25,9 +25,7 @@ pub fn make_command(mut command: Command) -> Command {
         .subcommand_required(true)
         .arg_required_else_help(true)
         .org_arg()
-        .project_arg(true)
-        // TODO: Remove this when ready for release
-        .hide(true);
+        .project_arg(true);
     each_subcommand!(add_subcommand);
     command
 }