Update changelog

Author: JulianVennen

CHANGELOG.md

@@ -1,9 +1,2 @@
-## Breaking Changes
-- `MclogsClient#uploadLog(Path)` now throws an ExecutionException if reading the file fails
-  instead of throwing an IOException immediately.
-
-## Improvements
-- Add endpoint for analysing a log without storing it
-- Add endpoint for fetching storage limits
-- Use instance limits for truncating logs passed by their path
-- Do not read more log content than the limit from the input stream
+## Build System
+- Migrate to Portal OSSRH Staging API