fix: Include retireOnDelete in cache size calculation #400

Job	Run time
check_branch	1s
Check if database upgrade tests should be run	5s
Build Openfire from source (17, zulu)	15m 25s
Build Openfire from source (21, zulu)	15m 6s
Execute Connectivity CI tests	33s
Execute aioxmpp-based CI tests	1m 47s
Execute Smack-based CI tests	1m 3s
Generate DEB artifact	3m 45s
Test SQL Server Upgrades	0s
Test MySQL Upgrades	0s
Test Postgres Upgrades	0s
Check if Docker Hub secrets exist	1s
Publish to Maven	0s
Publish to Docker Hub	0s
Test tagged images published to Docker Hub	0s
	37m 46s

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