Update LouisBrunner/diff-action action to v2.2.0 #596

Job	Run time
Generate Charts	13s
Validate values schema json (cron-jobs)	4s
Ensure cron-jobs README is up to date	8s
Validate values schema json (default-backend)	5s
Ensure default-backend README is up to date	5s
Validate values schema json (docker-hub-exporter)	5s
Ensure docker-hub-exporter README is up to date	5s
Validate values schema json (pi-hole-exporter)	5s
Ensure pi-hole-exporter README is up to date	5s
Validate values schema json (redirect)	6s
Ensure redirect README is up to date	5s
Validate values schema json (redis-db-assignment-operator)	4s
Ensure redis-db-assignment-operator README is up to date	5s
Lint	33s
Test on Kubernetes v1.23	7m 34s
Test on Kubernetes v1.24	7m 46s
Test on Kubernetes v1.25	7m 58s
Test on Kubernetes v1.26	7m 53s
Test on Kubernetes v1.27	6m 56s
Test on Kubernetes v1.28	7m 19s
Test on Kubernetes v1.29	6m 27s
Test on Kubernetes v1.30	6m 6s
Test on Kubernetes v1.31	6m 6s
	1h 5m 53s

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