Fixes build image failure

[parambole]

Introduced in: #121

Error:

 => ERROR [5/6] RUN pip install -r /app/requirements_with_jax_stable_stack.txt                                                 2.1s
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 > [5/6] RUN pip install -r /app/requirements_with_jax_stable_stack.txt:                                                            
#9 1.790                                                                                                                            
#9 1.790 [notice] A new release of pip is available: 24.2 -> 24.3.1                                                                 
#9 1.790 [notice] To update, run: pip install --upgrade pip
#9 1.791 ERROR: Could not open requirements file: [Errno 2] No such file or directory: '/app/requirements_with_jax_stable_stack.txt'
------

Fix:

Changed to /deps/requirements_with_jax_stable_stack.txt

Tested:

bash .github/workflows/build_and_upload_images.sh CLOUD_IMAGE_NAME=maxdiffusion_jax_stable_stack_0.4.35 MODE=stable_stack PROJECT=tpu-prod-env-multipod LOCAL_IMAGE_NAME=maxdiffusion_jax_stable_stack_0.4.35 BASEIMAGE=us-docker.pkg.dev/cloud-tpu-images/jax-stable-stack/tpu:jax0.4.35-rev1

[aireenmei]

LGTM!