Routine CI fixes

[Kirill888]

• update version of black
• pull in ipykernel for tests

[github-actions[bot]]

🚀 Deployed on https://641eacc30d6ffe030f94b904--odc-geo-docs.netlify.app

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (bf10d1d) 98.07% compared to head (9bbaf80) 98.07%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #83 +/- ## ======================================== Coverage 98.07% 98.07% ======================================== Files 23 23 Lines 3786 3786 ======================================== Hits 3713 3713 Misses 73 73 ``` | [Impacted Files](https://codecov.io/gh/opendatacube/odc-geo/pull/83?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube) | Coverage Δ | | |---|---|---| | [odc/geo/\_cog.py](https://codecov.io/gh/opendatacube/odc-geo/pull/83?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube#diff-b2RjL2dlby9fY29nLnB5) | `82.20% <ø> (ø)` | | | [odc/geo/\_compress.py](https://codecov.io/gh/opendatacube/odc-geo/pull/83?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube#diff-b2RjL2dlby9fY29tcHJlc3MucHk=) | `100.00% <ø> (ø)` | | | [odc/geo/ui.py](https://codecov.io/gh/opendatacube/odc-geo/pull/83?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube#diff-b2RjL2dlby91aS5weQ==) | `98.14% <ø> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opendatacube)

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