BIP375: add 0.1.2 changelog for LABEL length validation

bip-0375.mediawiki

@@ -10,7 +10,7 @@
   Assigned: 2025-01-08
   License: BSD-2-Clause
   Discussion: https://groups.google.com/g/bitcoindev/c/5G5wzqUXyk4
-  Version: 0.1.1
+  Version: 0.1.2
   Requires: 352, 370, 374
 </pre>
 
@@ -406,6 +406,8 @@ Use the provided [[bip-0375/test_runner.py|test runner]] to validate each test v
 
 == Changelog ==
 
+* '''0.1.2''' (2026-09-27):
+** Validate PSBT_OUT_SP_V0_LABEL is exactly 4 bytes; add invalid test vector for wrong length.
 * '''0.1.1''' (2026-04-16):
 ** Add test vectors and reference for validating Sending Silent Payments with PSBTs.
 * '''0.1.0''' (2025-01-13):