update CI matrix selectors (#28)

Contributes to rapidsai/build-planning#25.
Contributes to rapidsai/build-planning#3.

This project uses a `jq` filter in its GitHub Actions configuration to
select exactly 1 combination of `(architecture, Python version, CUDA
version)` for each of its CI jobs.

This PR proposes removing string literals referencing specific versions,
so that the configuration won't have to be updated in the future as
RAPIDS changes its supported matrix of Python and CUDA versions.

Credit for this to @bdice / @ajschmidt8 :
rapidsai/build-planning#25 (comment).
I'm just clicking the buttons 😁

.github/workflows/build.yaml

@@ -35,7 +35,8 @@ jobs:
       date: ${{ inputs.date }}
       sha: ${{ inputs.sha }}
       # Package is pure Python and only ever requires one build.
-      matrix_filter: map(select(.ARCH == "amd64" and .PY_VER == "3.10" and .CUDA_VER == "12.0.1"))
+      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
+      matrix_filter: map(select(.ARCH == "amd64")) | max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]) | [.]
   upload-conda:
     needs: python-build
     secrets: inherit
@@ -55,7 +56,8 @@ jobs:
       date: ${{ inputs.date }}
       script: ci/build_wheel.sh
       # Package is pure Python and only ever requires one build.
-      matrix_filter: map(select(.ARCH == "amd64" and .PY_VER == "3.10" and .CUDA_VER == "12.0.1"))
+      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
+      matrix_filter: map(select(.ARCH == "amd64")) | max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]) | [.]
   wheel-publish:
     needs: wheel-build
     secrets: inherit

.github/workflows/pr.yaml

@@ -22,12 +22,14 @@ jobs:
     with:
       build_type: pull-request
       # Package is pure Python and only ever requires one build.
-      matrix_filter: map(select(.ARCH == "amd64" and .PY_VER == "3.10" and .CUDA_VER == "12.0.1"))
+      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
+      matrix_filter: map(select(.ARCH == "amd64")) | max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]) | [.]
   wheel-build:
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
     with:
       build_type: pull-request
       # Package is pure Python and only ever requires one build.
-      matrix_filter: map(select(.ARCH == "amd64" and .PY_VER == "3.10" and .CUDA_VER == "12.0.1"))
+      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
+      matrix_filter: map(select(.ARCH == "amd64")) | max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]) | [.]
       script: "ci/build_wheel.sh"