Feat/add to externalcl workflow lighthouse and gnosis support - release 2.61

[tosettil-polimi]

This PR updates the QA sync workflow to improve flexibility and expand compatibility with different consensus clients and networks.

Key Changes:

1. Renamed Job:

   • Changed prysm-minimal-node-sync-from-scratch-test → sync-with-externalcl for broader applicability.

2. Matrix Strategy for Multiple Clients & Chains:

   • Introduced matrix configuration to run tests for:
     • Clients: Lighthouse, Prysm
     • Chains: Mainnet, Gnosis
   • Exclusion: Prysm + Gnosis is not tested.

3. Client-Specific Setup:

   • Lighthouse and Prysm are now dynamically installed based on the matrix configuration.
   • JWT secret is generated per test run.

4. Erigon Sync Execution Update:

   • Uses ${{ matrix.chain }} and ${{ matrix.client }} dynamically in test execution and result logging.

5. Enhanced Logging & Artifacts:

   • Client-specific logs are now uploaded as artifacts.
   • Improved log handling for both Lighthouse and Prysm.

6. Additional Cleanup Steps:

   • Removed consensus layer data (CL_DATA_DIR) after tests to free up disk space.

[mriccobene]

I think it is better to install prysm on ${{ github.workspace }}/consensus