Fix woodpecker warnings

.woodpecker/build.yml

@@ -1,5 +1,7 @@
 steps:
   run:
+    when:
+      event: push
     image: gradle:7.6-jdk11-jammy
     commands:
       # Install Sequoia-SOP

.woodpecker/reuse.yml

@@ -2,6 +2,8 @@
 # See https://reuse.software/
 steps:
   reuse:
+    when:
+      event: push
     image: fsfe/reuse:latest
     commands:
-      - reuse lint
+      - reuse lint