feat(weave-trace): add CA certificate support for weave deployments

[amwarrier]

Added CA certificate mounting and processing for three weave-trace services:

• weave-trace
• weave-trace-worker
• weave-evaluate-model-worker

Changes:

• Mount CA certificates using volumesTpls (wandb.caCertsVolumes)
• Mount into containers using volumeMountsTpls (wandb.caCertsVolumeMounts)
• Set command to /entrypoint.sh to ensure update-ca-certificates runs
• Move application commands to args to preserve entrypoint execution

This ensures custom CA certificates are processed at container startup
and added to the system trust store.

Summary by CodeRabbit

• New Features

  • Added CA certificate mounting for trace, worker, and evaluation components so containers can access supplied CA bundles.
  • Standardized startup invocation to a consistent entrypoint form while preserving existing Python/uvicorn behavior.

• Chores

  • Chart version bumped to 0.38.2.

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