[Infra] Add changelog for #15139 (#15141)

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: ncooke3

Crashlytics/CHANGELOG.md

@@ -1,3 +1,6 @@
+# Unreleased
+- [fixed] Do not log using raw print in an internal class. (#15138)
+
 # 12.0.0
 - [fixed] Resolved compiler warnings related to constant definitions. (#15059)