docs(changelog): Add entry for snapshot upload chunking fix

Co-Authored-By: Claude <noreply@anthropic.com>

Author: NicoHinderling

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Fixes
 
+- (snapshots) Chunk image uploads to avoid file descriptor exhaustion and 413 errors when uploading hundreds of images ([#3249](https://github.com/getsentry/sentry-cli/pull/3249))
 - (sourcemaps) Skip non-base64 embedded sourcemaps during injection ([#3243](https://github.com/getsentry/sentry-cli/pull/3243))
 
 ### New Features ✨