Update spring-boot-admin.version to v3.3.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
de.codecentric:spring-boot-admin-starter-client (source)	3.3.0 -> 3.3.1
de.codecentric:spring-boot-admin-starter-server (source)	3.3.0 -> 3.3.1

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