ci: avoid attempting to get CSC_KEY_PASSWORD interactively in github actions

bin/package

@@ -65,10 +65,11 @@ if [ -n "$RELEASE" ]; then
 fi
 
 if [ "$OSTYPE" == "msys" ]; then
-    if [ -z "$CIRCLE_TAG" ]; then
+    if [ $CI != true ]; then
         read -s -p "Windows certificate password: " -r CSC_KEY_PASSWORD
         export CSC_KEY_PASSWORD
-    else
+    elif [ -n "$CIRCLE_TAG" ]; then
+        # We only want to run this on CircleCI as Github doesn't have the CSC_KEY_PASSWORD secret set.
         certutil -f -p ${CSC_KEY_PASSWORD} -importPfx ~/windows-shift-reset-llc.p12
     fi
 fi