fix woodpecker workflow syntax

.woodpecker/.build.yml

@@ -2,7 +2,7 @@ when:
   event: [tag, push]
 
 steps:
-  build:
+  - name: build
     image: golang:1.24-alpine
     commands:
       - apk update

.woodpecker/.lint.yml

@@ -2,8 +2,8 @@ when:
   event: [tag, push]
 
 steps:
-  lint:
-    image: golang:1.23-alpine
+  - name: lint
+    image: golang:1.24-alpine
     commands:
       - apk update
       - apk add bash curl jq

.woodpecker/.tests.yml

@@ -2,7 +2,7 @@ when:
   event: [tag, push]
 
 steps:
-  tests:
+  - name: tests
     image: golang:1.24-alpine
     environment:
       TEST_DB_HOST: db