Move to upstream Dgraph4j shaded dependency

[EnricoMi]

Checklist before submitting

• Did you read the contributing guide?
• Did you update the docs?
• Did you write any tests to validate this change?

Description

Moves to the official Dgraph4j shaded client dependency.

Review process for approval

1. All tests and other checks must succeed.
2. At least one core contributors must review and approve.
3. If a core contributor requests changes, they must be addressed.

[github-actions]

Test Results

 2 125 files  ±0   2 125 suites  ±0   41m 36s ⏱️ -34s
   485 tests ±0     485 ✅ ±0  0 💤 ±0  0 ❌ ±0 
31 835 runs  ±0  31 835 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit cc56356. ± Comparison against base commit 5a7a21b.

♻️ This comment has been updated with latest results.