fix(ci): Only build Assistant from git for main branch

For stable branches, use the App Store version to avoid compatibility

issues with newer Assistant versions that only support Nextcloud

versions 33+

Signed-off-by: silver <s.szmajduch@posteo.de>

[skip ci]

Author: silverkszlo

.github/workflows/cypress-e2e.yml

@@ -85,6 +85,7 @@ jobs:
           TESTING=true npm run build --if-present
 
       - name: Install node dependencies & build assistant app
+        if: matrix.server-versions == 'main'
         working-directory: apps/assistant
         run: |
           composer install --no-dev