[Django] #36929: Drop support for GEOS 3.9

[Django]

#36929: Drop support for GEOS 3.9
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Reporter: David Smith | Type:
| Cleanup/optimization
Status: new | Component: GIS
Version: 6.0 | Severity: Normal
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Geospatial libraries are typically supported for 5 years. GEOS 3.9.0 was
released in December 2020 and therefore support could be removed. See
[https://github.com/libgeos/geos/blob/main/NEWS.md News].

The motivation for this is that this
[https://github.com/django/django/pull/20707 PR] proposes to add a feature
that is available in GEOS 3.10+.
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Ticket URL: <https://code.djangoproject.com/ticket/36929>
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