Bump docker package to v25.0.6 to fix critical CVE GHSA-v23v-6jw2-98fq

[jordigilh]

Fixes a critical CVE found in the docker/docker package: https://github.com/moby/moby/security/advisories/GHSA-v23v-6jw2-98fq

This is a minor z-stream bump that should not introduce a regression. There's an existing bot PR that is bumping the same package to 26.1.4 (https://github.com/operator-framework/operator-sdk/pull/6794), but this version still contains the bug as per advisory. It would be better to use version 26.1.5, which has the fix for this bug.