chore(docs): introduce stac-auth-proxy ROOT_PATH_SKIP_PREFIXES.

[pantierra]

Related #568

Let's use and document the upstream changes: developmentseed/stac-auth-proxy#189

[claude]

Claude finished @pantierra's task in 1m 11s —— View job

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Review

✅ No blocking issues — safe to merge.

• charts/eoapi/values.yaml:488 bumps image.tag from v1.1.0 → v1.2.0, which now matches the stac-auth-proxy dependency version already pinned in charts/eoapi/Chart.yaml:60 (previously out of sync — good fix).
• charts/eoapi/values.yaml:520 adds ROOT_PATH_SKIP_PREFIXES so /raster, /vector, /browser, /multidim links aren't incorrectly rewritten with the /stac prefix.
• charts/eoapi/profiles/experimental.yaml drops the per-profile image.tag pin (now inherits the corrected default) and removes the startupProbe/livenessProbe/readinessProbe overrides that pointed at /stac/healthz. Per docs/stac-auth-proxy.md:96, the proxy's actual health endpoint is /healthz at root (ROOT_PATH only affects link rewriting), so these overrides looked like a workaround for older-version behavior that's no longer needed with v1.2.0 — removing them lets the subchart's own correct default probes apply.
• Docs update in docs/stac-auth-proxy.md clearly explains the new setting and its default.

No correctness, security, or best-practice issues found in this diff.

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💰 Estimated review cost: $0.47 · 1m10s · 17 turns