Update module golang.org/x/sync to v0.23.0 (main)

[ske-renovate-operator]

This PR contains the following updates:

Package	Change	Age	Confidence
golang.org/x/sync	v0.22.0 → v0.23.0

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[stackit-ske-bot]

Renovate Update Verification Report

• Classification: Green (Verified)
• Model Used: gemini-3-8-flash
• Dependency: golang.org/x/sync (v0.22.0 -> v0.23.0)

Impact Analysis

• Adaptation Rationale: No code adaptations or modifications are required. In cloud-provider-stackit, the only usage of golang.org/x/sync is errgroup.WithContext in pkg/metrics/server.go#L10 and pkg/metrics/server.go#L31-L46 for managing the Prometheus metrics server lifecycle. Upstream changes in v0.23.0 do not alter errgroup behavior or APIs. All local linters and unit tests (make check, make test, go test -count=1 ./...) passed cleanly without errors.
• Breaking Changes:
  • semaphore: panic on negative capacity (golang/go#80183): semaphore.NewWeighted now panics if supplied a negative capacity. This is not relevant to cloud-provider-stackit because the semaphore package is not imported or used anywhere in the repository.
  • all: upgrade go directive to at least 1.26.0 (golang/go#69095): Upgrades upstream Go module directive to Go 1.26.0. This is an internal module directive bump for upstream maintenance and introduces no breaking changes or API incompatibilities for consumers.

Changelog Summary & Source

• Source: golang/sync@v0.22.0...v0.23.0 GitHub Compare
• Summary:
  • semaphore: golang/go#80183 Reject negative capacities in semaphore.NewWeighted(n) by panicking at construction time while continuing to allow zero capacity.
  • Module Toolchain: golang/go#69095 Upgrade Go directive to at least 1.26.0 per Go release policy.