Update quay.io/mongodb/mongodb-agent-ubi Docker tag to v108

This MR contains the following updates:

Package	Type	Update	Change
quay.io/mongodb/mongodb-agent-ubi		major	12.0.34.7888-1 -> 108.0.1.8718-1
quay.io/mongodb/mongodb-agent-ubi	ironbank-docker	major	12.0.34.7888-1-context -> 108.0.1.8718-1-context
quay.io/mongodb/mongodb-agent-ubi	stage	major	12.0.34.7888-1-context -> 108.0.1.8718-1-context

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