add zizmor config and debug

Author: blink1073

.evergreen/scripts/setup-dev-env.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # Set up a development environment on an evergreen host.
-set -eu
+set -eux
 
 HERE=$(dirname ${BASH_SOURCE:-$0})
 HERE="$( cd -- "$HERE" > /dev/null 2>&1 && pwd )"

.github/zizmor.yml

@@ -0,0 +1,7 @@
+rules:
+  unpinned-uses:
+    config:
+      policies:
+        actions/*: ref-pin
+        mongodb-labs/drivers-github-tools/*: ref-pin
+        mongodb-labs/drivers-evergreen-tools: ref-pin