Update CHANGELOG.md from release 26.3.0 (#806) #129

Job	Run time
Detect relevant changed files	4s
Build/Publish arm64 Image	5m 46s
Build/Publish amd64 Image	7m 26s
Run cargo-udeps	1m 56s
Publish/Sign 0.0.0-dev Index	35s
Package/Publish 0.0.0-dev Helm Chart	28s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	18s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	16s
Failure Notification	0s
Finished Build and Publish	4s
	16m 53s

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