[Dependency] Bump Go SDK to v0.51.0

[alexott]

Changes

Bumped Go SDK to 0.51.0.

Main changes are related to credentials and pipeline services.

Tests

• [ ] make test run locally
• [ ] relevant change in docs/ folder
• [ ] covered with integration tests in internal/acceptance
• [ ] relevant acceptance tests are passing
• [ ] using Go SDK

[github-actions[bot]]

If integration tests don't run automatically, an authorized user can run them manually by following the instructions below:

Trigger: go/deco-tests-run/terraform

Inputs:

• PR number: 4198
• Commit SHA: c8ba8cdc71cc490f654cd6d0e88bb7bf9a708a4b

Checks will be approved automatically on success.

[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/11721335717

[alexott]

I need to regenerate models as well