Update nginx Docker tag to v1.25.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
nginx	kubernetes_replication_controller	patch	1.25.4 -> 1.25.5
nginx	kubernetes_pod	patch	1.25.4 -> 1.25.5
nginx	kubernetes_deployment	patch	1.25.4 -> 1.25.5

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