Widen quiver dependency range for DDC compilation compatibility

[aaronlademann-wf]

Problem

The current quiver dependency range ('>=0.17.0 <0.22.0') is prohibitive for consumers trying to utilize strong-mode / DDC features.

Solution

Widen the range to include quiver 0.25.0.

Once released / published to pub, these changes will address #25

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@justinfagnani @sethladd @kevmoo

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[aaronlademann-wf]

My organization (Workiva) signed it.