part of epic: #472

Context
We currently are drowning in old not update renovate PRs and its hard to do proper ticket and PR maintainance.

Scope
Its time to update all of our dependencies and clean out old PRs to bring the project back into a maintainable state. This includes not just dependencies, but also use latest tooling

Technical Steps

• update all go.mod dependencies
• use latest go 1.25 both as toolchain as well as for compiling
• use latest terraform provider
• update to latest golangci-lint
• close obsolete renovate PRs

Additional context
This is the preparation for #336