Revert "feat: Upgrade flux to 2.1.2"

[sonofgibs]

Reverts #1672

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[coveralls]

Pull Request Test Coverage Report for Build 6776705956

Warning: This coverage report may be inaccurate.

We've detected an issue with your CI configuration that might affect the accuracy of this pull request's coverage report.
To ensure accuracy in future PRs, please see these guidelines.
A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 79.532%

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Totals
Change from base Build 6776701513:	0.0%
Covered Lines:	136
Relevant Lines:	171

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💛 - Coveralls