Update hadoop-mapreduce-client-core to 3.3.6

[scala-steward-asf[bot]]

About this PR

📦 Updates org.apache.hadoop:hadoop-mapreduce-client-core from 2.7.7 to 3.3.6 ⚠

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^{labels: library-update, early-semver-major, semver-spec-major, commit-count:1}

[pjfanning]

The hbase tests are disabled. I think we not upgrade any drops for this connector.

[raboof]

superseded by #499 for now until we #61