Update changelog

Author: vitaut

ChangeLog.md

@@ -2,6 +2,19 @@
 
 - Fixed compilation on GCC 9.4 (https://github.com/fmtlib/fmt/issues/4313).
 
+- Worked around an internal compiler error when using C++20 modules with gcc
+  14.2 and earlier (https://github.com/fmtlib/fmt/issues/4295).
+
+- Fixed formatting into `std::ostreambuf_iterator` when using format string
+  compilation (https://github.com/fmtlib/fmt/issues/4309,
+  https://github.com/fmtlib/fmt/pull/4312). Thanks @phprus.
+
+- Reduced size of format specs (https://github.com/fmtlib/fmt/issues/4298).
+
+- Readded `args()` to `fmt::format_context`
+  (https://github.com/fmtlib/fmt/issues/4307,
+  https://github.com/fmtlib/fmt/pull/4310). Thanks @Erroneous1.
+
 # 11.1.2 - 2025-01-12
 
 - Fixed ABI compatibility with earlier 11.x versions