chore: run integration tests against main branch (#682)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 02b5d3a..759eea2 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -2,7 +2,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
   schedule:
     - cron: '0 2 * * *' # Run every day, at 2AM UTC.