Upgrade colab base image to 20260416-060047 (#1547)

Upgrade both GPU (runtime) and CPU (cpu-runtime) Colab base images to
the latest available release:

- GPU: `release-colab-external-images_20260416-060047_RC00`
- CPU: `release-colab-external-images_20260416-060047_RC00`

Previously using `release-colab-external_20260226-060109_RC00`.

Note: The tag naming convention has changed from
`release-colab-external_*` to `release-colab-external-images_*`.

b/493600019

Author: stevemessick

Dockerfile.tmpl

@@ -1,7 +1,7 @@
 {{ if eq .Accelerator "gpu" }}
-FROM us-docker.pkg.dev/colab-images/public/runtime:release-colab-external_20260226-060109_RC00
+FROM us-docker.pkg.dev/colab-images/public/runtime:release-colab-external-images_20260416-060047_RC00
 {{ else }}
-FROM us-docker.pkg.dev/colab-images/public/cpu-runtime:release-colab-external_20260226-060109_RC00
+FROM us-docker.pkg.dev/colab-images/public/cpu-runtime:release-colab-external-images_20260416-060047_RC00
 {{ end}}
 
 ADD kaggle_requirements.txt /kaggle_requirements.txt
@@ -28,6 +28,8 @@ RUN uv pip install --no-build-isolation --no-cache --system "git+https://github.
 # b/468367647: Unpin protobuf, version greater than v5.29.5 causes issues with numerous packages
 RUN uv pip install --system --force-reinstall --no-cache --no-deps torchtune
 RUN uv pip install --system --force-reinstall --no-cache "protobuf==5.29.5"
+# b/493600019: Colab base image ships numba/numba-cuda that do not support NumPy 2.4; upgrade both.
+RUN uv pip install --system --force-reinstall --no-cache numba numba-cuda
 
 # Adding non-package dependencies:
 ADD clean-layer.sh  /tmp/clean-layer.sh

kaggle_requirements.txt

@@ -108,8 +108,6 @@ ray
 rgf-python
 s3fs
 scikit-learn
-# Scikit-learn accelerated library for x86
-scikit-learn-intelex>=2023.0.1
 scikit-multilearn
 scikit-optimize
 scikit-plot