Fix hard-coded GERS + release references

[danabauer]

Aside from the duckdb CI error, I noticed a few hard-coded GERS + beyond release references we may want to also fix:

• docs/docs/gers/gers-tutorial.mdx

  Line 185 in 9b90974

  FROM read_parquet('s3://overturemaps-us-west-2/release/2025-04-23.0/theme=places/type=place/*', filename=true, hive_partitioning=1),

• docs/docs/gers/gers-tutorial.mdx

  Line 474 in 9b90974

  FROM read_parquet('s3://overturemaps-us-west-2/release/2025-04-23.0/theme=places/type=place/*', filename=true, hive_partitioning=1),

• docs/docs/examples/ibis.mdx

  Line 37 in 9b90974

  "s3://overturemaps-us-west-2/release/2024-09-18.0/theme=base/type=infrastructure/*",

• docs/docs/examples/pandas.mdx

  Line 79 in 9b90974

  read_parquet('s3://overturemaps-us-west-2/release/2024-09-18.0/theme=base/type=water/*', filename=true, hive_partitioning=1)

• docs/static/notebooks/overture-duckdb-pandas-example.ipynb

  Line 128 in 9b90974

  " read_parquet('s3://overturemaps-us-west-2/release/2024-07-22.0/theme=base/type=water/*', filename=true, hive_partitioning=1)\n",

Originally posted by John McCall (@lowlydba) in #524 (review)