Add CHANGELOG for release v2.7.2 #42475

Job	Run time
Build and Lint integration-tests	2m 45s
Check Paths That Require Tests To Run	10s
Enforce CTF Version	6s
Get Solana Sha From Go Mod	21s
Build Chainlink Image	4s
Compare/Build Automation Test List	8s
Build Test Image	0s
Get ProjectSerum Version	3s
Check If Solana Test Image Exists	10s
Version Migration Tests	0s
Solana Build Artifacts	49s
Solana Build Test Image	2s
Solana Smoke Tests	8s
ETH Smoke Tests cron	55s
ETH Smoke Tests flux	57s
ETH Smoke Tests ocr	1m 13s
ETH Smoke Tests ocr2	58s
ETH Smoke Tests ocr2-plugins	53s
ETH Smoke Tests automation-01	11s
ETH Smoke Tests vrf	1m 2s
ETH Smoke Tests automation-02	7s
ETH Smoke Tests vrfv2	55s
ETH Smoke Tests automation-03	15s
ETH Smoke Tests log_poller-01	8s
ETH Smoke Tests vrfv2plus	54s
ETH Smoke Tests log_poller-02	7s
ETH Smoke Tests automation-04	8s
ETH Smoke Tests forwarder_ocr	54s
ETH Smoke Tests automation-05	14s
ETH Smoke Tests log_poller-03	9s
ETH Smoke Tests forwarders_ocr2	51s
ETH Smoke Tests log_poller-04	10s
ETH Smoke Tests automation-06	8s
ETH Smoke Tests log_poller-05	13s
ETH Smoke Tests automation-07	10s
ETH Smoke Tests log_poller-06	8s
ETH Smoke Tests automation-08	16s
ETH Smoke Tests log_poller-07	12s
ETH Smoke Tests automation-09	8s
ETH Smoke Tests automation-10	14s
ETH Smoke Tests automation-11	10s
ETH Smoke Tests log_poller-08	7s
ETH Smoke Tests automation-12	10s
ETH Smoke Tests log_poller-09	9s
ETH Smoke Tests log_poller-10	9s
ETH Smoke Tests	5s
ETH Smoke Tests Go Mod Cache	2m 10s
Clean up integration environment deployments	1m 43s
	21m 59s

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