Update to use the new CI machines

.github/workflows/chipyard-full-flow.yml

@@ -65,7 +65,7 @@ jobs:
     name: setup-repo
     needs: [change-filters, cancel-prior-workflows]
     if: needs.change-filters.outputs.needs-rtl == 'true'
-    runs-on: jktqos
+    runs-on: as4
     steps:
       - name: Delete old checkout
         run: |
@@ -88,7 +88,7 @@ jobs:
   run-cfg-finder:
     name: run-cfg-finder
     needs: [setup-repo]
-    runs-on: jktqos
+    runs-on: as4
     steps:
       - name: Run config finder
         run: |
@@ -101,7 +101,7 @@ jobs:
   run-tutorial:
     name: run-tutorial
     needs: [setup-repo]
-    runs-on: jktqos
+    runs-on: as4
     steps:
       - name: Run smoke test
         run: |
@@ -170,7 +170,7 @@ jobs:
   cleanup:
     name: cleanup
     needs: [run-tutorial]
-    runs-on: jktqos
+    runs-on: as4
     if: ${{ always() }}
     steps:
       - name: Delete repo copy and conda env