ci: route to canonical native arcd labels [self-hosted, linux, <arch>]

Replaces non-canonical scale-set / org-prefixed labels with the
existing labels every arcd host registers with. Matches evo for
amd64 and spark for arm64. No new labels added.

.github/workflows/build-lux-kms.yml

@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: evo
+    runs-on: [self-hosted, linux, amd64]
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4
@@ -49,9 +49,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-          runner-amd64: evo
-          runner-arm64: spark
-          runner-deploy: evo
       - name: Set up Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -68,9 +65,6 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
-          runner-amd64: evo
-          runner-arm64: spark
-          runner-deploy: evo
       - name: Summary
         run: |
           echo "### Build complete" >> "$GITHUB_STEP_SUMMARY"

.github/workflows/build-server-self.yml

@@ -22,7 +22,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: evo
+    runs-on: [self-hosted, linux, amd64]
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4