Add database migration step to build workflow

Author: xc2f

.github/workflows/build-to-branch.yml

@@ -51,6 +51,9 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
+      - name: Migrate database
+        run: pnpm payload migrate
+
       - name: Build
         env:
           NODE_OPTIONS: --max-old-space-size=4096