Upgrade transformers to v4.49.0

[hmellor]

Supersedes #13602

Depends on:

• Replace LogitsWarper with LogitsProcessor noamgat/lm-format-enforcer#159
• Lazy import libraries in src/transformers/image_utils.py huggingface/transformers#36435 (waiting for patch release)
• https://huggingface.co/openbmb/MiniCPM3-4B/discussions/40

[github-actions]

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