renovate: Update dependency go to v1.25.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go (source)	toolchain	patch	1.25.4 → 1.25.6

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Release Notes

golang/go (go)

v1.25.6

v1.25.5

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Configuration

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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