Update CHANGELOG.md from release 26.3.0 (#816) #121

Job	Run time
Detect relevant changed files	7s
Build/Publish arm64 Image	6m 34s
Build/Publish amd64 Image	8m 15s
Run cargo-udeps	2m 33s
Package/Publish 0.0.0-dev Helm Chart	1m 1s
Publish/Sign 0.0.0-dev Index	26s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	56s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	51s
Failure Notification	0s
Finished Build and Publish	3s
	20m 46s

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