chore(deps): update pypgstac requirement in the all group

Updates the requirements on [pypgstac](https://github.com/stac-utils/pgstac) to permit the latest version.

Updates `pypgstac` to 0.9.1
- [Release notes](https://github.com/stac-utils/pgstac/releases)
- [Changelog](https://github.com/stac-utils/pgstac/blob/main/CHANGELOG.md)
- [Commits](stac-utils/pgstac@v0.8.0...v0.9.1)

---
updated-dependencies:
- dependency-name: pypgstac
  dependency-type: direct:production
  dependency-group: all
...

Signed-off-by: dependabot[bot] <[email protected]>

setup.py

@@ -17,7 +17,7 @@
     "buildpg",
     "brotli_asgi",
     "pygeofilter>=0.2",
-    "pypgstac==0.8.*",
+    "pypgstac>=0.8,<0.10",
 ]
 
 extra_reqs = {