ci: every job on Blacksmith's 8 vCPU runner

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
   gate:
     # The check main's ruleset requires, named Gate in every spin-stack repository.
     name: Gate
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     # A ceiling, not a budget. The default is six hours, and a `go test` that deadlocks
     # would hold a runner for all of them without printing a failure.
     timeout-minutes: 15

.github/workflows/image.yml

@@ -42,7 +42,7 @@ concurrency:
 jobs:
   # Whether this change can reach e2fsprogs or the image; see the note in qemu.yml.
   changed:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     timeout-minutes: 10
     outputs:
       build: ${{ steps.touches.outputs.build }}
@@ -70,7 +70,7 @@ jobs:
   build:
     needs: changed
     if: needs.changed.outputs.build == 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     timeout-minutes: 60
     steps:
       - name: Checkout

.github/workflows/kernel.yml

@@ -40,7 +40,7 @@ concurrency:
 jobs:
   # Whether this change can reach the kernel; see the note in qemu.yml.
   changed:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     timeout-minutes: 10
     outputs:
       build: ${{ steps.touches.outputs.build }}
@@ -68,7 +68,7 @@ jobs:
   build:
     needs: changed
     if: needs.changed.outputs.build == 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     timeout-minutes: 180
     steps:
       - name: Checkout

.github/workflows/qemu.yml

@@ -47,7 +47,7 @@ jobs:
   # Whether this change can reach QEMU at all; see the note on the triggers. Skipped, the build
   # job reports as skipped, which a required check counts as passed.
   changed:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     timeout-minutes: 10
     outputs:
       build: ${{ steps.touches.outputs.build }}
@@ -76,7 +76,7 @@ jobs:
   build:
     needs: changed
     if: needs.changed.outputs.build == 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     # A cold build is tens of minutes and a warm one is a cache restore, so the spread is
     # wide and the ceiling has to sit above the cold case. What it is really for is the
     # other end: a `configure` that stops on a prompt would hold a runner for six hours

.github/workflows/release.yml

@@ -38,7 +38,7 @@ concurrency:
 
 jobs:
   release:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     # QEMU and the kernel are each tens of minutes from cold, on a runner with two cores,
     # and this job builds both plus the image. The GitHub Actions cache makes a warm run
     # far shorter; the ceiling is for the cold one.