chore: Prepare 41.0.0-rc1

[andygrove]

Which issue does this PR close?

Part of #11476

Rationale for this change

What changes are included in this PR?

• Bump version
• New changelog

Are these changes tested?

Are there any user-facing changes?

[alamb]

Thank you @andygrove

[alamb]

this is a pretty sweet list of changes

[alamb]

admittedly I stack the deck here with many small PRs

[viirya]

Not sure about the CI failure:

Binary files a/datafusion/core/example.parquet and b/datafusion/core/example.parquet differ

Re-triggered to verify it.

[andygrove]

Not sure about the CI failure:

Binary files a/datafusion/core/example.parquet and b/datafusion/core/example.parquet differ

Re-triggered to verify it.

The example.parquet file will change every time we increase the version number, because we store metadata in the parquet file witht the version of DataFusion that was used when writing. This is not ideal... for now I will regenerate this file as part of this PR.

[alamb]

Sorry -- I clicked the wrong button and closed this PR by accident

[alamb]

Not sure about the CI failure:

Binary files a/datafusion/core/example.parquet and b/datafusion/core/example.parquet differ

Re-triggered to verify it.

The example.parquet file will change every time we increase the version number, because we store metadata in the parquet file witht the version of DataFusion that was used when writing. This is not ideal... for now I will regenerate this file as part of this PR.

I will file a ticket

[alamb]

Filed #11892 to track the "parquet files differ" error