Release object store `0.12.4` (non breaking API) Release September 2025

[alamb]

Which part is this question about

• Part of [EPIC] Planned Release Schedule #392
• Follow on to Release object store 0.12.3 (non breaking API) Release July 2025 #428

Per release schedule we aim for2 months release:

Additional context

Describe the solution you'd like

• Update version + make release notes: Update version to 0.12.4 and add changelog #491
• Test with DataFusion: Update to object_store 0.12.4 datafusion#17671
• Test with other crates: chore: Test with object_store 0.12.4 rc developmentseed/obstore#568
• Prepare release candidate + begin vote thread: https://lists.apache.org/thread/bzdxosoms6zqj1ss0v7wq3s5l40w3fjj
• Release to crates.io
• File tickets for next planned releases:

[alamb]

FYI @crepererum @mbrobbel and @tustvold -- I will hope to make a release candidate later this week

[alamb]

Here are the PRs that we are waiting on (everything should be ready to go shortly)

• AWS S3: Support STS endpoint, WebIdentity, RoleArn, RoleSession configuration #480
• Fix for clippy 1.90 #492
• Update version to 0.12.4 and add changelog #491

[alamb]

🤔 -- I found that we merged a breaking change that we'll have to revert if we want to release a non breaking change:

• refactor: remove AWS dynamo integration #407

I made a PR to do so here:

• Revert "refactor: remove AWS dynamo integration (#407)" #493

[alamb]

If anyone else has time to test their crates with this release that would be super helpful

Here is an example of how I tested with DataFusion:

• Update to object_store 0.12.4 datafusion#17671

[kylebarron]

I updated obstore to 0.12.4 in developmentseed/obstore#568 and looks like the rust side is all right, and it's just a new Python clippy-esque check that's breaking CI