chore(deps): bump go-libs to pick up migrator index name fix

[Dav-14]

Summary

• Bumps github.com/formancehq/go-libs/v5 to commit 4911b79a8667d1f6168242ccf72b08b75815e74a from main.
• Pulls in fix(migrations): scope version_id unique index name per table go-libs#594 (merged), which fixes a hardcoded idx_version_id unique index name that collided per-schema and crashed services with SQLSTATE 42P10 at startup.
• Affected DBs self-heal on next deploy; no manual SQL required.

Test plan

• go build ./... passes
• go vet ./... passes
• CI (unit + integration) green

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

[coderabbitai]

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[Dav-14]

Closing — this service does not use the go-libs publish/messaging package, so it never instantiates the CircuitBreakerStorageModule and isn't affected by the migrator index name collision fixed in formancehq/go-libs#594. The bump is cosmetic only; closing to keep the PR queue focused on impacted services.