GTC-2580: Make vector rasterization more robust by using latest PixETL version

[dmannarino]

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Pull request type

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• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
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• Other (please describe):

What is the current behavior?

• Rasterizing vector data sets with complicated geometry (WDPA for example) sometimes fails (and crashes the DB)

Issue Number: GTC-2580

What is the new behavior?

• Uses a new PixETL version which is gentler on the DB, limiting parallelization when interacting with it. It also implements some retry logic to make process more robust should the DB crash
• Minor refactoring/cleanup to the associated test

Does this introduce a breaking change?

• Yes
• No

Other information

This PR increments the version of PixETL in use to that made after merging this PR: wri/gfw_pixetl#169

[danscales]

Seems fine. Though just to make sure - this is not just bumping the PixETL version - you are also changing or cleaning up a rasterization test. I assume you intended to do this, even though it's not in the description of the pull request?

[dmannarino]

Seems fine. Though just to make sure - this is not just bumping the PixETL version - you are also changing or cleaning up a rasterization test. I assume you intended to do this, even though it's not in the description of the pull request?

You are correct. Thank you for asking, and my apologies for failing to mention it! Will update for posterity.