chore(ci): bump Rust/maturin build jobs to 8cpu runners

Cargo and maturin parallelize compilation across crates in the
dependency graph, so these jobs benefit from more cores. Bumps
wheel builds, rust-ci, code-quality, and publish jobs from 4cpu
to 8cpu.

Co-authored-by: Claude <noreply@anthropic.com>

Author: samantha-earthmover

.github/workflows/code-quality.yaml

@@ -26,7 +26,7 @@ jobs:
   code-quality:
     name: Code Quality
     timeout-minutes: 15
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
 
     steps:
       - name: Checkout repository

.github/workflows/publish-rust-library.yml

@@ -17,7 +17,7 @@ on:
 jobs:
   publish:
     name: Check and publish
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

.github/workflows/python-check.yaml

@@ -26,7 +26,7 @@ defaults:
 
 jobs:
   build-wheels:
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
@@ -135,7 +135,7 @@ jobs:
           python -m pytest -n 4 -m "not hypothesis"
 
   build-wheels-free-threaded:
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-python@v6

.github/workflows/python-ci.yaml

@@ -133,15 +133,15 @@ jobs:
         # Note: fromJSON converts JSON string to array since GH Actions doesn't support array literals in expressions
         branch: ${{ github.event_name == 'schedule' && fromJSON('["main", "support/v1.x"]') || fromJSON(format('["{0}"]', inputs.branch)) }}
         platform:
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: x86_64
             manylinux: auto
-          # - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          # - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
           #   target: x86
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: aarch64
             manylinux: 2_28
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: armv7
             manylinux: 2_28
     steps:
@@ -190,13 +190,13 @@ jobs:
       matrix:
         branch: ${{ github.event_name == 'schedule' && fromJSON('["main", "support/v1.x"]') || fromJSON(format('["{0}"]', inputs.branch)) }}
         platform:
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: x86_64
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: x86
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: aarch64
-          - runner: "runs-on=${{ github.run_id }}/runner=4cpu-linux-x64"
+          - runner: "runs-on=${{ github.run_id }}/runner=8cpu-linux-x64"
             target: armv7
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

.github/workflows/python-upstream.yaml

@@ -30,7 +30,7 @@ defaults:
 jobs:
   build:
     name: upstream-dev
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     continue-on-error: true
     if: ${{
       (contains(github.event.pull_request.labels.*.name, 'test-upstream') && github.event_name == 'pull_request')
@@ -248,7 +248,7 @@ jobs:
 
   xarray-backends:
     name: xarray-tests-upstream
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     if: ${{
       (contains(github.event.pull_request.labels.*.name, 'test-upstream') && github.event_name == 'pull_request')
       || github.event_name == 'workflow_dispatch'

.github/workflows/rust-ci.yaml

@@ -44,7 +44,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["runs-on=${{ github.run_id }}/runner=4cpu-linux-x64", ubuntu-24.04-arm, macos-15-intel, macos-latest]
+        os: ["runs-on=${{ github.run_id }}/runner=8cpu-linux-x64", ubuntu-24.04-arm, macos-15-intel, macos-latest]
 
     steps:
       - name: Checkout repository
@@ -189,7 +189,7 @@ jobs:
   wasm-build:
     name: WASM Build
     timeout-minutes: 15
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     defaults:
       run:
         working-directory: ./

.github/workflows/rust-upstream.yaml

@@ -30,7 +30,7 @@ env:
 jobs:
   zarrs:
     name: zarrs-upstream
-    runs-on: runs-on=${{ github.run_id }}/runner=4cpu-linux-x64
+    runs-on: runs-on=${{ github.run_id }}/runner=8cpu-linux-x64
     continue-on-error: true
     if: ${{
       (contains(github.event.pull_request.labels.*.name, 'test-upstream') && github.event_name == 'pull_request')