Add test package to trigger workflow

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

.github/workflows/book-export.yml

@@ -3,12 +3,16 @@ on:
   push:
     branches:
       - main
+      - environments
 
 jobs:
-  upstream:
+  upstream_with_environment:
     # Run job only on servo/servo
     if: github.repository == 'servo/servo'
     runs-on: ubuntu-latest
+    environment:
+      name: publish
+      deployment: false
     steps:
       - name: Check out Servo
         uses: actions/checkout@v6
@@ -21,7 +25,7 @@ jobs:
         with:
           path: book
           repository: 'servo/book'
-          token: ${{ secrets.BOOK_SYNC_TOKEN }}
+          token: ${{ secrets.ENV_BOOK_SYNC_TOKEN }}
       - name: Check for changes
         working-directory: python/servo/platform/linux_packages
         id: changes

python/servo/platform/linux_packages/apt/apt_common.txt

@@ -3,6 +3,7 @@
 
 # Please keep these in sync with the packages in the book, using the instructions in the README.md
 # in this folder.
+I_AM_A_TEST_PACKAGE
 build-essential
 ca-certificates
 ccache