Add .DS_Store to ignore list for the analyzer to run on macos cleanly. (#65530)

diff --git a/dev/bots/analyze.dart b/dev/bots/analyze.dart
index be17149..d64d064 100644
--- a/dev/bots/analyze.dart
+++ b/dev/bots/analyze.dart
@@ -1141,6 +1141,8 @@
         continue;
       if (path.basename(entity.path) == 'gradlew.bat')
         continue;
+      if (path.basename(entity.path) == '.DS_Store')
+        continue;
       if (extension == null || path.extension(entity.path) == '.$extension') {
         matches += 1;
         yield entity;