No dup wfs (#6)

Reviewed-on: https://codeberg.org/woodpecker-plugins/go-plugin/pulls/6
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

.woodpecker.yaml

@@ -1,15 +1,21 @@
+when:
+  - event: [pull_request, tag, cron]
+  - event: push
+    branch:
+      - ${CI_REPO_DEFAULT_BRANCH}
+
 variables:
-  - &golang 'golang:1.18'
+  - &golang "golang:1.18"
 
 steps:
-  - name: vendor
+  vendor:
     image: *golang
     commands: go mod vendor
 
-  - name: lint
+  lint:
     image: golangci/golangci-lint:v1.50-alpine
     commands: golangci-lint run
 
-  - name: test
+  test:
     image: *golang
     commands: go test --cover ./...