Update changelog

Signed-off-by: mulhern <[email protected]>

Author: mulkieran

CHANGES.txt

@@ -1,3 +1,16 @@
+libcryptsetup-rs 0.13.1
+=======================
+Recommended Rust toolchain version: 1.86.0
+Recommended development environment: Fedora 41
+
+- Revert clang macro fallback usage:
+  https://github.com/stratis-storage/libcryptsetup-rs/pull/433
+
+- Tidies and Maintenance:
+  https://github.com/stratis-storage/libcryptsetup-rs/pull/434
+  https://github.com/stratis-storage/libcryptsetup-rs/pull/432
+
+
 libcryptsetup-rs 0.13.0
 =======================
 Recommended Rust toolchain version: 1.86.0