docs: update CHANGELOG.md for v3.6.0-rc2 (#13696)

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Signed-off-by: Alan Clucas <[email protected]>
Co-authored-by: Joibel <[email protected]>
Co-authored-by: Alan Clucas <[email protected]>

CHANGELOG.md

@@ -1,5 +1,42 @@
 # Changelog
 
+## v3.6.0-rc2 (2024-10-01)
+
+Full Changelog: [v3.6.0-rc1...v3.6.0-rc2](https://github.com/argoproj/argo-workflows/compare/v3.6.0-rc1...v3.6.0-rc2)
+
+### Selected Changes
+
+* [68adbcc0c](https://github.com/argoproj/argo-workflows/commit/68adbcc0cce29e4daa37b521f02ca2fccec1ca2c) fix(ui): handle React 18 batching for "Submit" button on details page. Fixes #13453 (#13593)
+* [ca6c4144c](https://github.com/argoproj/argo-workflows/commit/ca6c4144ced98e111d77111fc696984739607694) fix: all written artifacts should be saved and garbage collected (#13678)
+* [a0ba3c70d](https://github.com/argoproj/argo-workflows/commit/a0ba3c70d18227e74bed1d77aa86c4ad4212d159) fix: add `cronWorkflowWorkers` log. Fixes: #13681 (#13688)
+* [54621cc60](https://github.com/argoproj/argo-workflows/commit/54621cc60117cf68183be24322119d85a80bb650) feat(cli): add version header + warning on client-server mismatch. Fixes #9212 (#13635)
+* [fc7b21009](https://github.com/argoproj/argo-workflows/commit/fc7b210097181a9e74540e93cee16bffc9f1a682) fix(cron): allow unresolved variables outside of `when` (#13680)
+* [ef09d9ffe](https://github.com/argoproj/argo-workflows/commit/ef09d9ffed0fb3c0f3e672db588d6a7c6cf2a5f5) refactor(deps): drop `pkg/errors` as a direct dependency (#13673)
+* [e0ca7ffd1](https://github.com/argoproj/argo-workflows/commit/e0ca7ffd1c0d94d744ebb79d0fd28a56121ab0ee) fix: add retry for invalid connection. Fixes #13578 (#13580)
+* [524406451](https://github.com/argoproj/argo-workflows/commit/524406451f4dfa57bf3371fb85becdb56a2b309a) fix: Prevent data race from global metrics round-tripper (#13641)
+* [2dac1266b](https://github.com/argoproj/argo-workflows/commit/2dac1266b446d059ac6df78afe3d09a6ddb3af4b) fix(cron): various follow-ups for multiple schedules (#13369)
+* [dc731d04a](https://github.com/argoproj/argo-workflows/commit/dc731d04ab14deea20ccca221f33e0df1143ad42) fix(deps): Upgrade swagger-ui-react to v5.17.12. Fixes CVE-2024-45801 (#13626)
+* [4e887521b](https://github.com/argoproj/argo-workflows/commit/4e887521befd5cc0e490f09d04cd3fb887a00ea9) feat: multiple mutexes and semaphores (#13358)
+
+<details><summary><h3>Contributors</h3></summary>
+
+* Alan Clucas
+* Andrew Melnick
+* Anton Gilgur
+* Eduardo Rodrigues
+* Isitha Subasinghe
+* Julie Vogelman
+* Mason Malone
+* Philipp Pfeil
+* Tim Collins
+* William Van Hevelingen
+* Yuan Tang
+* github-actions[bot]
+* l2h
+* shuangkun tian
+
+</details>
+
 ## v3.6.0-rc1 (2024-09-18)
 
 Full Changelog: [v3.5.11...v3.6.0-rc1](https://github.com/argoproj/argo-workflows/compare/v3.5.11...v3.6.0-rc1)