chore(deps): pin pypgstac to 0.9.11 to match pgstac v0.9.11 image

[pantierra]

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[claude]

Claude finished @pantierra's task in 54s —— View job

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Reviewing PR #87 ✅

• Gather context (diff, CLAUDE.md)
• Review changes for correctness/security issues
• Apply ponytail-review pass
• Post final review

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✅ No blocking issues — safe to merge.

The diff pins pypgstac back to 0.9.11 (pyproject.toml:22, uv.lock) to match the ghcr.io/stac-utils/pgstac:v0.9.11 image pinned in docker-compose.yml:216, and switches dockerfiles/Dockerfile.browser / docker-compose.yml from the pantierra/stac-browser fork back to upstream radiantearth/stac-browser now that PR #930 merged there. Both changes are internally consistent — client and server pgstac schema versions now match, and the browser image references a real upstream commit instead of a fork ref.

Non-blocking notes:

• The PR title says "upgraded pypgstac to version 0.9.12", but the actual change (per the commit message) pins it back to 0.9.11 to match the pgstac image version — the title/description doesn't match the intent. Worth correcting before merge so the commit history reads clearly.
• .github/workflows/ingest.sh:33,36 separately pins pypgstac==0.9.9 as its fallback install path, which is now inconsistent with the 0.9.11 pinned everywhere else. Pre-existing and out of scope for this PR, but worth a follow-up so CI/local ingest and the schema stay aligned.

Simplify (ponytail): nothing to flag — this is a pure version-pin/dependency diff with no new code or abstractions.

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💰 Estimated review cost: $0.26 · 0m53s · 17 turns