fix(workflows): correct Blacksmith runner label typo (#437)

* chore(workflows): complete migration to Blacksmith cloud runners

Migrate remaining workflows from self-hosted axecap runners to Blacksmith:
- docker.yml: publish job
- release.yml: publish job
- security.yml: audit and deny jobs (conditional on push events)

This completes the transition away from self-hosted infrastructure.
Axecap runner registrations (IDs 21, 22) have been removed.

All workflows now use blacksmith-2vcpu-ubuntu-2404 label for consistency.

* fix(workflows): correct Blacksmith runner label typo

Fix typo in runner labels: blacksmith-2vcpu-ubuntu-240 -> blacksmith-2vcpu-ubuntu-2404

Affected workflows:
- workflow-sanity.yml: no-tabs and actionlint jobs
- ci.yml: test, build, and docs-quality jobs

This fixes the stuck workflows that were queued indefinitely waiting for
non-existent runner labels.

.github/workflows/ci.yml

@@ -138,7 +138,7 @@ jobs:
         name: Test
         needs: [changes]
         if: needs.changes.outputs.rust_changed == 'true'
-        runs-on: blacksmith-2vcpu-ubuntu-240
+        runs-on: blacksmith-2vcpu-ubuntu-2404
         timeout-minutes: 30
         steps:
             - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
@@ -153,7 +153,7 @@ jobs:
         name: Build (Smoke)
         needs: [changes]
         if: needs.changes.outputs.rust_changed == 'true'
-        runs-on: blacksmith-2vcpu-ubuntu-240
+        runs-on: blacksmith-2vcpu-ubuntu-2404
         timeout-minutes: 20
 
         steps:
@@ -187,7 +187,7 @@ jobs:
         name: Docs Quality
         needs: [changes]
         if: needs.changes.outputs.docs_changed == 'true'
-        runs-on: blacksmith-2vcpu-ubuntu-240
+        runs-on: blacksmith-2vcpu-ubuntu-2404
         timeout-minutes: 15
         steps:
             - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4

.github/workflows/workflow-sanity.yml

@@ -22,7 +22,7 @@ permissions:
 
 jobs:
     no-tabs:
-        runs-on: blacksmith-2vcpu-ubuntu-240
+        runs-on: blacksmith-2vcpu-ubuntu-2404
         timeout-minutes: 10
         steps:
             - name: Checkout
@@ -55,7 +55,7 @@ jobs:
                   PY
 
     actionlint:
-        runs-on: blacksmith-2vcpu-ubuntu-240
+        runs-on: blacksmith-2vcpu-ubuntu-2404
         timeout-minutes: 10
         steps:
             - name: Checkout