Update CHANGELOG.md from release 26.3.0 (#407) #84

Job	Run time
Detect relevant changed files	4s
Run cargo-udeps	1m 52s
Build/Publish amd64 Image	6m 44s
Build/Publish arm64 Image	4m 10s
Publish/Sign 0.0.0-dev Index	35s
Package/Publish 0.0.0-dev Helm Chart	29s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	19s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	16s
Failure Notification	0s
Finished Build and Publish	3s
	14m 32s

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