go1.25 support

[ldez]

This PR is to evaluate and prepare golangci-lint to go1.25

This PR will evolve during the beta and RC phases of go1.25.
The PR is a draft and will be rebased and modified several times during the RC phase.

https://go.dev/wiki/Go-Release-Cycle

Questions and problems related to go1.25 should be reported in the issue #5873.

Todo:

• Update workflows
• Update base Docker images
• Update minimum Go version inside go.mod
• Update gci standard packages list
• [~] Use new language features from go1.n-1
• Update testdata tests

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