fix(docker): use versioned -latest tag for all rapidsai images (#871)

In rapidsai/build-planning#187 we switched the docker image tagging scheme
over to include the CalVer information.  This was done to allow us to make
changes to the images during burndown without breaking release pipelines.

This PR moves all of the existing `latest` tags to the newer versioned tag
`25.08-latest` and also modifies the `update_version.sh` script to bump
that version at branch creation time.

xref: rapidsai/build-planning#187

Authors:
  - Gil Forsyth (https://github.com/gforsyth)
  - James Lamb (https://github.com/jameslamb)

Approvers:
  - James Lamb (https://github.com/jameslamb)

URL: #871

Author: gforsyth

.github/workflows/build.yaml

@@ -40,7 +40,7 @@ jobs:
       arch: "amd64"
       branch: ${{ inputs.branch }}
       build_type: ${{ inputs.build_type || 'branch' }}
-      container_image: "rapidsai/ci-conda:latest"
+      container_image: "rapidsai/ci-conda:25.08-latest"
       date: ${{ inputs.date }}
       node_type: "cpu4"
       script: "ci/build_docs.sh"

.github/workflows/pr.yaml

@@ -48,7 +48,7 @@ jobs:
       build_type: pull-request
       node_type: "cpu4"
       arch: "amd64"
-      container_image: "rapidsai/ci-conda:latest"
+      container_image: "rapidsai/ci-conda:25.08-latest"
       script: "ci/build_docs.sh"
   telemetry-summarize:
     # This job must use a self-hosted runner to record telemetry traces.

ci/release/update-version.sh

@@ -31,4 +31,5 @@ echo "${NEXT_FULL_TAG}" > VERSION
 
 for FILE in .github/workflows/*.yaml; do
   sed_runner "/shared-workflows/ s/@.*/@branch-${NEXT_SHORT_TAG}/g" "${FILE}"
+  sed_runner "s/:[0-9]*\\.[0-9]*-/:${NEXT_SHORT_TAG}-/g" "${FILE}"
 done