Install release version of torchtune

Author: mergennachin

examples/models/llama3_2_vision/install_requirements.sh

@@ -5,7 +5,5 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-NIGHTLY_VERSION="dev20250115"
-
 # Install torchtune nightly for model definitions.
-pip install --pre torchtune==0.6.0.${NIGHTLY_VERSION} --extra-index-url https://download.pytorch.org/whl/nightly/cpu --no-cache-dir
+pip install torchtune==0.5.0 --no-cache-dir