ci: run linux jobs on lux-build-amd64 ARC scale set (no GitHub-hosted builders)

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ env:
 jobs:
   lint:
     name: Lint
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -89,7 +89,7 @@ jobs:
 
   benchmark:
     name: Benchmark
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -148,7 +148,7 @@ jobs:
 
   security:
     name: Security Scan
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -179,7 +179,7 @@ jobs:
 
   integration:
     name: Integration Test
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     needs: [lint, test, build]
     steps:
       - name: Checkout code
@@ -208,7 +208,7 @@ jobs:
 
   release:
     name: Release
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     needs: [lint, test, build, security, integration]
     if: github.ref == 'refs/heads/main' && github.event_name == 'push'
     steps:

.github/workflows/docs.yml

@@ -26,7 +26,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     defaults:
       run:
         working-directory: docs-site
@@ -60,7 +60,7 @@ jobs:
   deploy:
     if: github.ref == 'refs/heads/main'
     needs: build
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}

.github/workflows/fresh-clone-ci.yml

@@ -19,7 +19,7 @@ env:
 jobs:
   fresh-clone-test:
     name: Fresh clone go test
-    runs-on: ubuntu-latest
+    runs-on: lux-build-amd64
     container:
       image: ubuntu:24.04
     steps: