Make CI run on main and develop

Author: HaroldCindy

.github/workflows/build.yml

@@ -3,7 +3,8 @@ name: build
 on:
   push:
     branches:
-      - 'integer_stuff'
+      - 'main'
+      - 'develop'
     paths-ignore:
       - 'docs/**'
       - 'papers/**'