chore(deps): updated ghcr.io/stac-utils/stac-fastapi-pgstac docker tag to v6

Author: renovate[bot]

charts/eoapi/values.yaml

@@ -369,7 +369,7 @@ stac:
       requestRate: 100000m
   image:
     name: ghcr.io/stac-utils/stac-fastapi-pgstac
-    tag: 5.0.3
+    tag: 6.0.0
   command:
     - "uvicorn"
     - "stac_fastapi.pgstac.app:app"