fix: group OTEL contrib in GitLab agent

See not grouped updates:

• go: Update module go.opentelemetry.io/contrib/i... (gitlab-org/cluster-integration/gitlab-agent!1904 - closed)
• go: Update module go.opentelemetry.io/contrib/i... (gitlab-org/cluster-integration/gitlab-agent!1905 - closed)

See https://github.com/renovatebot/renovate/blob/5ebf4182cdb2457ff2e1b12e5aff55cf77d5f187/lib/config/presets/internal/group.ts#L283 and https://github.com/renovatebot/renovate/releases/tag/38.0.0 for glob support in matchPackageNames.