chore: migrate default branch from master to main (#1498)

diff --git a/scripts/updatediscoveryartifacts.py b/scripts/updatediscoveryartifacts.py
index b823bd7..761d42f 100644
--- a/scripts/updatediscoveryartifacts.py
+++ b/scripts/updatediscoveryartifacts.py
@@ -52,7 +52,7 @@
         [
             "git",
             "diff",
-            "origin/master",
+            "origin/main",
             "--name-only",
             "--",
             DISCOVERY_DOC_DIR / "*.json",