ci: replace Blacksmith runners with GitHub-hosted runners (#96)

* ci: use GitHub-hosted runners in ci-failure-email.yml

* ci: use GitHub-hosted runners in test.yml

* ci: use ubuntu-latest in ci-failure-email.yml

* ci: use ubuntu-latest in test.yml

Author: sunnylqm

.github/workflows/ci-failure-email.yml

@@ -12,7 +12,7 @@ jobs:
     if: contains(fromJSON('["failure","timed_out","action_required"]'), github.event.workflow_run.conclusion)
     permissions:
       issues: write
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     steps:
       - name: Create or update failure issue
         env:
@@ -71,7 +71,7 @@ jobs:
     if: github.event.workflow_run.conclusion == 'success'
     permissions:
       issues: write
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     steps:
       - name: Close recovered failure issues
         env:

.github/workflows/test.yml

@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   lint:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     steps:
@@ -43,7 +43,7 @@ jobs:
         run: bun run lint
 
   test:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     steps:
@@ -77,7 +77,7 @@ jobs:
           if-no-files-found: error
 
   node18-smoke:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     steps:
@@ -114,7 +114,7 @@ jobs:
         run: bun test tests/hermes-blockers.test.ts
 
   publish-dry-run:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     steps:
@@ -148,7 +148,7 @@ jobs:
 
   hermes-integration:
     name: hermes-hbc-${{ matrix.hbc }}${{ matrix.suffix }}
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 15
     strategy:
       fail-fast: false