Update CHANGELOG.md

Cleanup CHANGELOG (Lightning-AI#12507)

Preparing for 1.6.0rc1 (Lightning-AI#12453)

Add Progress Bar to docs (Lightning-AI#11359)

Co-authored-by: Ethan Harris <[email protected]>
Co-authored-by: thomas chaton <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Set the state before saving "last" or "none" checkpoints (Lightning-A…

…I#11481)

Co-authored-by: Carlos Mocholi <[email protected]>

Update CHANGELOG.md

Co-authored-by: ananthsub <[email protected]>

Fix min/max logging default value (Lightning-AI#11310)

Co-authored-by: Carlos Mocholi <[email protected]>

Suppress Warning in `PredictionEpochLoop` (Lightning-AI#11189)

Co-authored-by: Rohit Gupta <[email protected]>
Co-authored-by: Carlos Mocholí <[email protected]>

Update the TQDM progress bar `on_train_epoch_end` (Lightning-AI#11069)

Co-authored-by: Carlos Mocholi <[email protected]>

1.5.5 release