chore(sourcemaps): Deprecate release bundle uploads

Author: szokeasaurusrex

src/api/mod.rs

@@ -991,6 +991,7 @@ impl<'a> AuthenticatedApi<'a> {
             .convert_rnf(ApiErrorKind::ProjectNotFound)
     }
 
+    #[deprecated = "release bundle uploads are deprecated in favor of artifact bundle uploads"]
     pub fn assemble_release_artifacts(
         &self,
         org: &str,

src/utils/file_upload.rs

@@ -550,6 +550,14 @@ fn poll_assemble(
                 context.dist,
             )?
         } else {
+            log::warn!(
+                "[DEPRECATION NOTICE] Your Sentry server does not support artifact bundle \
+                uploads. Falling back to deprecated release bundle upload. Support for this \
+                deprecated upload method will be removed in Sentry CLI 3.0.0. Please upgrade your \
+                Sentry server, or if you cannot upgrade, pin your Sentry CLI version to 2.x, so \
+                you don't get upgraded to 3.x when it is released."
+            );
+            #[expect(deprecated, reason = "fallback to legacy upload")]
             authenticated_api.assemble_release_artifacts(
                 context.org,
                 context.release()?,