add version field to getPendingDeposits and getPendingPartialWithdrawals and implement getPendingConsolidations

[tersec]

• Missing field version in beacon API methods getPendingDeposits and getPendingPartialWithdrawals #7149

In general, it aligns the implementation with:

• https://ethereum.github.io/beacon-APIs/?urls.primaryName=v3.1.0#/Beacon/getPendingConsolidations
• https://ethereum.github.io/beacon-APIs/?urls.primaryName=v3.1.0#/Beacon/getPendingDeposits
• https://ethereum.github.io/beacon-APIs/?urls.primaryName=v3.1.0#/Beacon/getPendingPartialWithdrawals

[github-actions]

Unit Test Results

       15 files  ±0    2 630 suites  ±0   1h 14m 43s ⏱️ - 2m 43s
  6 375 tests ±0    5 873 ✔️ ±0  502 💤 ±0  0 ❌ ±0 
44 316 runs  ±0  43 638 ✔️ ±0  678 💤 ±0  0 ❌ ±0 

Results for commit 05a0481. ± Comparison against base commit ff59a9e.