MAINT: Update niworkflows pin to support newer ANTs releases

[esavary]

See nipreps/niworkflows#771

[effigies]

ERROR: Cannot install mriqc and mriqc[all]==22.0.7.dev12+gba1d9af because these package versions have conflicting dependencies.

The conflict is caused by:
    mriqc[all] 22.0.7.dev12+gba1d9af depends on niworkflows~=1.7.1
    nirodents 0.2.7 depends on niworkflows~=1.5.2
    mriqc[all] 22.0.7.dev12+gba1d9af depends on niworkflows~=1.7.1
    nirodents 0.2.6 depends on niworkflows~=1.5.2

I think we've really hamstrung ourselves with ~=. I think we need to go back to >= for all libraries. @mgxd has been playing with pip-tools lately and might have a workflow that will allow us to avoid situations like this while still pinning versions for deployment.

[oesteban]

For the time being, I just pushed a new release of nirodents. Let's bring this up in tomorrow's meeting.

[oesteban]

Finally, building - I'm merging this.

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