docs: Changelog

Author: marioevz

docs/CHANGELOG.md

@@ -19,6 +19,9 @@ Test fixtures for use by clients are available for each release on the [Github r
 
 ### 📋 Misc
 
+- ✨ Added the [EIP checklist template](https://eest.ethereum.org/main/writing_tests/checklist_templates/eip_testing_checklist_template/) that serves as a reference to achieve better coverage when implementing tests for new EIPs ([#1327](https://github.com/ethereum/execution-spec-tests/pull/1327)).
+- ✨ Added [Post-Mortems of Missed Test Scenarios](https://eest.ethereum.org/main/writing_tests/post_mortems/) to the documentation that serves as a reference list of all cases that were missed during the test implementation phase of a new EIP, and includes the steps taken in order to prevent similar test cases to be missed in the future ([#1327](https://github.com/ethereum/execution-spec-tests/pull/1327)).
+
 ### 🧪 Test Cases
 
 ## [v4.5.0](https://github.com/ethereum/execution-spec-tests/releases/tag/v4.5.0) - 2025-05-14