Deployment Delays (>10 mins) with Chalice 1.32.0

**Description**
While deploying AWS Lambda functions using Chalice (`chalice 1.32.0`, `python 3.12.2`, `darwin 24.6.0`), deployments are taking an unusually long time (over 10 minutes). This issue was not present earlier and seems to have degraded recently.

**Steps to Reproduce**
1. Use Chalice `1.32.0` with Python `3.12.2` on `darwin 24.6.0`.
2. Run `chalice deploy` for a moderately sized Lambda project.
3. Observe deployment time – consistently longer than 10 minutes.

**Environment**
- Chalice: `1.32.0`
- Python: `3.12.2`
- OS: `Darwin 24.6.0`

**Additional Notes**
- This delay did not occur with earlier deployments.
- Unsure if this is related to Chalice version, Python version, or a packaging change.
- Logs show normal progress but take much longer before completion.
- It gets stuck with `Creating deployment package`

Start by reproducing `chalice deploy` with Chalice 1.32.0, Python 3.12.2, and Darwin 24.6.0 for a moderately sized Lambda project. Observe the `Creating deployment package` phase and compare its duration with earlier deployments; done means identifying the cause of the delay and confirming normal deployment completion.

Written by the indexing model from the issue text.