add web analytics to https://py.iceberg.apache.org/

[kevinjqliu]

Apache Iceberg version

None

Please describe the bug 🐞

Similar to apache/iceberg#14157

add Matomo to https://py.iceberg.apache.org/

Willingness to contribute

• I can contribute a fix for this bug independently
• I would be willing to contribute a fix for this bug with guidance from the Iceberg community
• I cannot contribute a fix for this bug at this time

[kevinjqliu]

Manually ran the "Release Docs" github action, https://github.com/apache/iceberg-python/actions/runs/18352078977

Now i see matomo script on https://py.iceberg.apache.org/