ci: prevent more than one release from occurring at same time

.github/workflows/ci.yml

@@ -256,6 +256,8 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
   build-release:
+    concurrency:
+      group: release
     permissions:
       id-token: write
     if: |
@@ -297,6 +299,8 @@ jobs:
           NPM_CONFIG_PROVENANCE: true
 
   release-pr:
+    concurrency:
+      group: release
     permissions:
       id-token: write
       pull-requests: write

.github/workflows/release-pr.yml

@@ -14,6 +14,8 @@ permissions:
 jobs:
   release-pr:
     if: github.repository == 'nuxt/nuxt' && github.event.issue.pull_request && github.event.comment.body == '/trigger release'
+    concurrency:
+      group: release
     permissions:
       id-token: write
       pull-requests: write

.github/workflows/release.yml

@@ -12,6 +12,8 @@ permissions: {}
 jobs:
   release:
     if: github.repository == 'nuxt/nuxt' && (startsWith(github.event.head_commit.message, 'v3.') || startsWith(github.event.head_commit.message, 'v4.'))
+    concurrency:
+      group: release
     permissions:
       id-token: write
     runs-on: ubuntu-latest