chore: Use pnpm 11 catalogs to force certain dependencies on common v…

[davidkna-sap]

Context

Closes SAP/ai-sdk-js-backlog#ISSUENUMBER.

…ersion

Approach for setting the actual PNPM version TBD.

What this PR does and why it is needed

[hyperspace-pr-bot]

Summary

The following content is AI-generated and provides a summary of the pull request:

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chore: Use pnpm 11 catalogs to centralize common dependency versions

What this PR does and why it is needed

This PR introduces pnpm 11 catalog support to centralize and enforce consistent versions of shared dependencies across all packages in the monorepo.

Dependency version centralization via pnpm-workspace.yaml catalog:

A catalog: section has been added to pnpm-workspace.yaml, defining canonical versions for:

• @sap-cloud-sdk/* packages (connectivity, http-client, openapi, util, etc.) → ^4.8.0
• @langchain/core → ^1.2.4
• @langchain/langgraph → ^1.4.8
• zod → ^4.4.3

All package.json files across the monorepo (packages/*, sample-code, tests/*) have been updated to reference "catalog:" instead of pinned or range version strings for these shared dependencies. This ensures version consistency and makes future upgrades a single-point change.

CI workflows updated to use pnpm-version: 11:

All GitHub Actions workflows that invoke the sap/cloud-sdk-js/.github/actions/setup action now explicitly pass pnpm-version: 11, enabling catalog support in CI. Affected workflows include:

• build.yml, e2e-tests.yml, smoke-tests.yml, spec-update.yaml
• bump.yml, publish-release.yml, publish-canary.yml, draft-release.yml
• auto-fix-lint.yml, auto-gen.yml, pnpm-update.yml, fosstars.yml, issue-reply.yml, api-docs.yml

In fosstars.yml, the hardcoded PNPM_VERSION: 11.13.0 env variable has also been replaced with a dynamic pnpm --version call, keeping the OWASP container in sync with the installed pnpm version automatically.

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PR Bot Information

Version: 1.29.18

• Correlation ID: 30442a70-919e-11f1-8443-3eb5f17c7fc1
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