build(woodpecker): run ci on next branch too

.woodpecker.yml

@@ -19,7 +19,7 @@ steps:
     image: codeberg.org/epsilon_02/todo-checker:1.1
     when:
       - event: push
-        branch: main
+        branch: [main, next]
     settings:
       # kxio-woodpecker-todo-checker - read:issue
       repository_token: '4acf14f93747e044aa2d1397367741b53f3d4f8f'
@@ -29,7 +29,7 @@ steps:
   lint_and_build:
     when:
       - event: push
-        branch: main
+        branch: [main, next]
       - event: tag
         ref: refs/tags/v*
     image: git.kemitix.net/kemitix/kxio-builder:latest
@@ -44,7 +44,7 @@ steps:
   test:
     when:
       - event: push
-        branch: main
+        branch: [main, next]
       - event: tag
         ref: refs/tags/v*
     image: git.kemitix.net/kemitix/kxio-builder:latest