Create a nightly pipeline for GA/EUS releases #16286

Job	Run time
⌨ Golang Lint	3m 1s
🗄 DB tests	57s
🔍 Check for missing or unused runner repos	14s
📦 Packit config lint	53s
🔍 Check for valid snapshot urls	46s
🔍 Check source preparation	1m 19s
🐍 Lint python scripts	1m 1s
🛃 Unit tests	4m 3s
🧹 cloud-cleaner-is-enabled	2s
Gitlab CI trigger helper	4s
🎀 kube-linter	18s
📦 RPMlint	1m 21s
🐚 Shellcheck	22s
	14m 21s

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