Update CI to buf-action default behaviour (#251)

Changes the CI behaviour to the defaults. Disables push & archive steps
as the dep on v2 modules (which is fixed in #250).

.github/workflows/buf-ci.yaml

@@ -0,0 +1,18 @@
+name: Buf CI
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
+  delete:
+permissions:
+  contents: read
+  pull-requests: write
+jobs:
+  buf:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: bufbuild/buf-action@v1
+        with:
+          push: false
+          archive: false

.github/workflows/ci.yaml

@@ -29,15 +29,10 @@ jobs:
         with:
           go-version: stable
           cache-dependency-path: go.work.sum
-      - name: Buf CI
+      - name: Install buf
         uses: bufbuild/buf-action@v1
         with:
-          github_token: ${{ github.token }}
-          format: true
-          lint: true
-          breaking: true
-          push: false
-          archive: false
+          setup_only: true
       - name: Buf generate
         run: |
           mkdir -p .tmp/bin