Bump version and update CHANGELOG for core v2.15.0 (#13947)

* Bump version and update CHANGELOG fore core v2.15.0

Signed-off-by: chainchad <96362174+chainchad@users.noreply.github.com>

* Fix syntax error in workflow (#13952)

(cherry picked from commit 7147653)

* Bump slack-notify-git-ref action for fixes

* Cleanup old CRIB file

* Use changeset github changelog generator

* Fix version

* Finalize date on changelog for 2.15.0 (#14144)

Signed-off-by: chainchad <96362174+chainchad@users.noreply.github.com>

* Use correct changelog generator for changesets

---------

Signed-off-by: chainchad <96362174+chainchad@users.noreply.github.com>
Co-authored-by: Thanh Nguyen <thanh@timweri.me>

.github/workflows/build-publish.yml

@@ -144,7 +144,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
       - name: Notify Slack
-        uses: smartcontractkit/.github/actions/slack-notify-git-ref@7fa90bbeff35aa6ce3a9054f542bcf10b7d47cec # slack-notify-git-ref@0.1.0
+        uses: smartcontractkit/.github/actions/slack-notify-git-ref@31e00facdd8f57a2bc7868b5e4c8591bf2aa3727 # slack-notify-git-ref@0.1.2
         with:
           slack-channel-id: ${{ secrets.SLACK_CHANNEL_RELEASE_NOTIFICATIONS }}
           slack-bot-token: ${{ secrets.SLACK_BOT_TOKEN_RELENG }} # Releng Bot

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog Chainlink Core
 
-## 2.15.0
+## 2.15.0 - 2024-08-21
 
 ### Minor Changes