638 spark dgraph connector GitHub deprecation warnings

[ljubon]

What type of PR is this?

CI: Resolve deprecation & warning messages in workflows Enable DependaBot for GitHub actions

What this PR does / why we need it:

Node16 has been out of support since September 2023. - more info in the post

• Fix CI warnings/deprecations in used action (commit)

Which issue(s) this PR fixes:

https://github.com/G-Research/gr-oss/issues/638

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Testing results

PASSED 🟢

Build

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8536832046/job/23386177490?pr=1

CI

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8536832055/job/23386179754?pr=1

Test Dgraph

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8536832039/job/23386177489?pr=1 NOTE this workflow is not executed on upstream

Test Integration

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8783884380/job/24103201660?pr=1

Test Python

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8783884380/job/24103201660?pr=1

Test Results

• https://github.com/gr-oss-devops/spark-dgraph-connector/actions/runs/8877788146

[github-actions[bot]]

Test Results

 2 996 files  ±0   2 996 suites  ±0   52m 6s :stopwatch: +23s    485 tests ±0     485 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  42 988 runs  ±0  42 988 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 5f95efd3. ± Comparison against base commit d7efaad4.